/* ==========================================================================
   Diäthelfer - Kalorienbedarf Rechner
   CSS-Styling & Farbschema
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties
   -------------------------------------------------------------------------- */
:root {
    /* Primärfarben - Grün (Gesundheit) */
    --color-primary: #2ecc71;
    --color-primary-dark: #27ae60;
    --color-primary-light: #a8e6cf;
    --color-primary-bg: #f0faf4;

    /* Sekundärfarben - Blau (Vertrauen) */
    --color-secondary: #3498db;
    --color-secondary-dark: #2980b9;
    --color-secondary-light: #a8d8ea;

    /* Akzentfarben */
    --color-accent: #e74c3c;
    --color-accent-light: #fadbd8;
    --color-warning: #f39c12;
    --color-warning-light: #fef5e7;

    /* Neutralfarben */
    --color-text: #2c3e50;
    --color-text-light: #7f8c8d;
    --color-text-muted: #95a5a6;
    --color-bg: #f8f9fa;
    --color-bg-white: #ffffff;
    --color-border: #e0e0e0;
    --color-border-light: #f0f0f0;

    /* Makronährstoff-Farben */
    --color-protein: #e74c3c;
    --color-carbs: #f39c12;
    --color-fat: #3498db;

    /* Schatten */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.06);

    /* Abstände */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* Radien */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-full: 50%;

    /* Typografie */
    --font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* Übergänge */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;

    /* Layout */
    --container-max-width: 960px;
    --header-height: auto;
}

/* --------------------------------------------------------------------------
   Cross-Browser Compatibility & Normalize
   -------------------------------------------------------------------------- */
html {
    line-height: 1.15;                /* Normalize */
    -webkit-text-size-adjust: 100%;   /* iOS Safari */
    -ms-text-size-adjust: 100%;       /* IE/Edge */
}

main { display: block; }              /* IE11 */

/* --------------------------------------------------------------------------
   Reset & Basis
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -webkit-flex-direction: column;
    -ms-flex-direction: column;
    flex-direction: column;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--color-primary-dark);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary);
}

ul {
    list-style: none;
}

/* --------------------------------------------------------------------------
   Typography
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--color-text);
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }

/* --------------------------------------------------------------------------
   Layout / Container
   -------------------------------------------------------------------------- */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.hidden {
    display: none !important;
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */
.site-header {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    color: var(--color-bg-white);
    padding: var(--spacing-sm) 0;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-bar {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* Hide subtitle on mobile */
.header-subtitle {
    display: none;
}

.header-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex: 1;
    min-width: 0;
}

.header-logo {
    font-size: var(--font-size-xl);
    line-height: 1;
    color: var(--color-bg-white);
}

.header-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-bg-white);
    margin-bottom: 0;
}

.header-subtitle {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.85);
    font-weight: var(--font-weight-normal);
}

/* Scroll offset for anchor links (header height) */
:target {
    scroll-margin-top: 100px;
}

/* Header Right */
.header-right {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: var(--spacing-sm);
}

/* Profile Dropdown */
.profile-dropdown {
    position: relative;
}

.profile-dropdown-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(255,255,255,0.15);
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: var(--radius-sm);
    color: #fff;
    cursor: pointer;
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
}

.profile-dropdown-toggle:hover {
    background: rgba(255,255,255,0.25);
    border-color: rgba(255,255,255,0.5);
}

.profile-avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: var(--radius-full);
    background: rgba(255,255,255,0.25);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-sm);
    text-transform: uppercase;
}

.profile-name-col {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    line-height: 1.2;
}

.profile-name-display {
    font-weight: var(--font-weight-semibold);
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.profile-temp-label {
    font-size: 9px;
    color: rgba(255,255,255,0.5);
    font-weight: var(--font-weight-normal);
    cursor: pointer;
    transition: color var(--transition-fast);
}

.profile-temp-label:hover {
    color: #fff;
    text-decoration: underline;
}

.profile-arrow {
    font-size: 10px;
    transition: transform var(--transition-fast);
}

.profile-arrow.rotated {
    transform: rotate(180deg);
}

.profile-dropdown-menu {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    min-width: 200px;
    background: var(--color-bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-border);
    z-index: 200;
    overflow: hidden;
}

.profile-dropdown-section {
    padding: var(--spacing-xs) 0;
}

.profile-dropdown-item {
    display: block;
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    color: var(--color-text);
    background: none;
    border: none;
    text-align: left;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.profile-dropdown-item:hover {
    background: var(--color-bg);
}

.profile-dropdown-item--active {
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary-dark);
    background: var(--color-primary-bg);
}

.profile-dropdown-item--danger {
    color: var(--color-accent);
}

.profile-dropdown-item--danger:hover {
    background: var(--color-accent-light);
}

.profile-dropdown-divider {
    height: 1px;
    background: var(--color-border-light);
    margin: var(--spacing-xs) 0;
}

/* Burger Button (mobile only) */
.burger-btn {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    padding: 6px;
    background: rgba(255,255,255,0.15);
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.burger-btn:hover {
    background: rgba(255,255,255,0.25);
}

.burger-line {
    display: block;
    width: 100%;
    height: 2px;
    background: #fff;
    border-radius: 1px;
}

/* Mobile Nav Drawer */
.mobile-nav {
    position: fixed;
    inset: 0;
    z-index: 300;
}

.mobile-nav-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.5);
}

.mobile-nav-drawer {
    position: absolute;
    top: 0;
    left: 0;
    width: 200px;
    max-width: 70vw;
    height: 100%;
    background: var(--color-bg-white);
    box-shadow: 4px 0 20px rgba(0,0,0,0.15);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.mobile-nav-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border-light);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
}

.mobile-nav-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--color-text-light);
    line-height: 1;
    padding: 0 4px;
}

.mobile-nav-close:hover {
    color: var(--color-text);
}

.mobile-nav ul {
    padding: var(--spacing-sm) 0;
}

.mobile-nav li {
    border-bottom: 1px solid var(--color-border-light);
}

.mobile-nav a {
    display: block;
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--color-text);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    transition: background var(--transition-fast);
}

.mobile-nav a:hover {
    background: var(--color-primary-bg);
    color: var(--color-primary-dark);
}

/* Desktop Nav (hidden on mobile, shown on desktop) */
.header-nav-desktop {
    display: none;
}

.header-nav-desktop ul {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.header-nav-desktop a {
    color: rgba(255, 255, 255, 0.9);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-xs) 0;
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
}

.header-nav-desktop a:hover {
    color: var(--color-bg-white);
    border-bottom-color: var(--color-bg-white);
}

/* --------------------------------------------------------------------------
   Sections
   -------------------------------------------------------------------------- */
.section {
    padding: var(--spacing-2xl) 0 0;
}

.section-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.section-description {
    font-size: var(--font-size-base);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
}

/* --------------------------------------------------------------------------
   Forms
   -------------------------------------------------------------------------- */
.calc-form {
    background: var(--color-bg-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    border: 1px solid var(--color-border-light);
    overflow-x: auto;
}

/* --------------------------------------------------------------------------
   Data Tables (Grundumsatz & PAL)
   -------------------------------------------------------------------------- */
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.data-table th {
    background: var(--color-primary-bg);
    color: var(--color-text);
    font-weight: var(--font-weight-semibold);
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 2px solid var(--color-primary-light);
    white-space: nowrap;
}

.data-table td {
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 1px solid var(--color-border-light);
    vertical-align: middle;
}

.data-table tfoot td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border-light);
}

.data-table input[type="text"],
.data-table input[type="number"] {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    color: var(--color-text);
    background-color: var(--color-bg-white);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    width: 100%;
    max-width: 120px;
    min-height: 40px;
}

.data-table input[readonly] {
    background-color: var(--color-bg);
    color: var(--color-text);
    border-color: var(--color-border-light);
    font-weight: var(--font-weight-semibold);
}

.data-table input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.data-table input::placeholder {
    color: var(--color-text-muted);
}

.data-table select {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    color: var(--color-text);
    background-color: var(--color-bg-white);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    width: 100%;
    min-height: 40px;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%237f8c8d' stroke-width='2' fill='none'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2rem;
}

.data-table select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.info-cell {
    font-size: var(--font-size-xs);
    color: var(--color-text-light);
    max-width: 400px;
    line-height: var(--line-height-relaxed);
}

.result-row {
    background: var(--color-primary-bg);
}

.result-row td {
    padding: var(--spacing-md);
}

.result-row--highlight {
    background: linear-gradient(135deg, var(--color-primary-bg) 0%, #e8f8f0 100%);
}

.result-row--highlight td {
    font-weight: var(--font-weight-semibold);
}

.result-row input[readonly] {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary-dark);
    background: var(--color-bg-white);
    border-color: var(--color-primary-light);
}

.btn-small {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-xs);
    min-height: 36px;
}

/* PAL Tätigkeit Select (wider) */
.pal-tat {
    min-width: 200px;
}

/* Legacy form-group styles kept for compatibility */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: var(--spacing-md);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    color: var(--color-text);
    background-color: var(--color-bg-white);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    font-weight: var(--font-weight-semibold);
    line-height: 1;
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-normal);
    text-align: center;
    white-space: nowrap;
    user-select: none;
}

.btn:active {
    transform: translateY(1px);
}

.btn-primary {
    width: 100%;
    padding: var(--spacing-lg);
    font-size: var(--font-size-lg);
    color: var(--color-bg-white);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-color: var(--color-primary-dark);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, #1e8449 100%);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(1px);
    box-shadow: var(--shadow-sm);
}

.btn-secondary {
    padding: var(--spacing-md) var(--spacing-xl);
    color: var(--color-text);
    background: var(--color-bg-white);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
}

.btn-secondary:hover {
    border-color: var(--color-primary);
    color: var(--color-primary-dark);
    box-shadow: var(--shadow-sm);
}

.print-btn-container {
    text-align: center;
    padding: var(--spacing-xl) 0;
}

/* --------------------------------------------------------------------------
   Results
   -------------------------------------------------------------------------- */
.results-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.result-card {
    background: var(--color-bg-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    text-align: center;
    border: 1px solid var(--color-border-light);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.result-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.result-card--highlight {
    background: linear-gradient(135deg, var(--color-primary-bg) 0%, var(--color-bg-white) 100%);
    border-color: var(--color-primary-light);
}

.result-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.result-value {
    display: block;
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary-dark);
    line-height: var(--line-height-tight);
}

.result-unit {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-top: var(--spacing-xs);
}

/* --------------------------------------------------------------------------
   Tempo Selection
   -------------------------------------------------------------------------- */
.tempo-select {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.tempo-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    background: var(--color-bg-white);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.tempo-btn:hover {
    border-color: var(--color-primary-light);
    background: var(--color-primary-bg);
}

.tempo-btn--active {
    border-color: var(--color-primary);
    background: var(--color-primary-bg);
    color: var(--color-primary-dark);
    font-weight: var(--font-weight-semibold);
}

.tempo-btn--warn {
    border-color: var(--color-border);
}

.tempo-btn--warn.tempo-btn--active {
    border-color: var(--color-accent);
    background: var(--color-accent-light);
    color: var(--color-accent);
}

.tempo-warn {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-accent);
    font-weight: var(--font-weight-normal);
    font-style: italic;
}

/* --------------------------------------------------------------------------
   Diet Goal Cards
   -------------------------------------------------------------------------- */
.goal-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.goal-card {
    background: var(--color-bg-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    text-align: center;
    border: 2px solid var(--color-border-light);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.goal-card:hover {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.goal-card--active {
    border-color: var(--color-primary);
    background: var(--color-primary-bg);
    box-shadow: var(--shadow-md);
}

.goal-card h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.goal-calories {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-sm);
}

.goal-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

/* --------------------------------------------------------------------------
   Macros
   -------------------------------------------------------------------------- */
.macros-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.macro-card {
    background: var(--color-bg-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    text-align: center;
    border: 1px solid var(--color-border-light);
    border-top: 4px solid var(--color-border);
}

.macro-card--protein {
    border-top-color: var(--color-protein);
}

.macro-card--carbs {
    border-top-color: var(--color-carbs);
}

.macro-card--fat {
    border-top-color: var(--color-fat);
}

.macro-card h3 {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.macro-value {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    line-height: var(--line-height-tight);
}

.macro-unit {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

.macro-bar {
    width: 100%;
    height: 8px;
    background: var(--color-border-light);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: var(--spacing-sm);
}

.macro-bar-fill {
    height: 100%;
    border-radius: 4px;
    transition: width var(--transition-slow);
}

.macro-card--protein .macro-bar-fill {
    background: var(--color-protein);
}

.macro-card--carbs .macro-bar-fill {
    background: var(--color-carbs);
}

.macro-card--fat .macro-bar-fill {
    background: var(--color-fat);
}

.macro-percent {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-light);
}

/* Macro Profile Buttons */
.macro-profiles {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.macro-profile-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    background: var(--color-bg-white);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.macro-profile-btn:hover {
    border-color: var(--color-primary-light);
    background: var(--color-primary-bg);
}

.macro-profile-btn--active {
    border-color: var(--color-primary);
    background: var(--color-primary-bg);
    color: var(--color-primary-dark);
    font-weight: var(--font-weight-semibold);
}

/* Macro Chart */
.macro-chart-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    justify-content: center;
}

#macroChart {
    flex-shrink: 0;
}

.macro-chart-legend {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text);
}

.legend-color {
    display: inline-block;
    width: 14px;
    height: 14px;
    border-radius: 3px;
    flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   Action Buttons Container
   -------------------------------------------------------------------------- */
.action-btn-container {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    padding: var(--spacing-xl) 0;
    flex-wrap: wrap;
}

.form-save-container {
    text-align: center;
    padding: var(--spacing-lg) 0 0;
}

.form-save-container .btn {
    min-width: 200px;
}

/* Overlay */
.overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.overlay-content {
    background: var(--color-bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-xl);
    max-width: 520px;
    width: 100%;
}

.overlay-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.overlay-header h3 {
    margin: 0;
}

.overlay-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--color-text-light);
    padding: 0 4px;
    line-height: 1;
}

.overlay-close:hover {
    color: var(--color-text);
}

.overlay-content p {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

.share-url-field {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-xs);
    font-family: monospace;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg);
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

.share-url-field:focus {
    outline: none;
    border-color: var(--color-primary);
}

/* Profile save banner (for temp/shared users) */
.profile-save-banner {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-lg);
    background: var(--color-warning-light);
    font-size: var(--font-size-xs);
    color: var(--color-text);
    cursor: pointer;
    border: none;
    width: 100%;
    text-align: left;
    font-family: var(--font-family);
    transition: background var(--transition-fast);
}

.profile-save-banner:hover {
    background: #fde8c8;
}

.save-name-input {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    min-height: 44px;
    width: 160px;
    color: var(--color-text);
    background: var(--color-bg-white);
}

.save-name-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

/* BMI Indicators */
.bmi-arrow { font-size: 14px; }
.bmi-low { color: var(--color-accent); }
.bmi-ok { color: var(--color-primary-dark); font-weight: bold; font-size: 16px; }
.bmi-high { color: var(--color-accent); }
.summary-item.bmi-low { background: var(--color-accent-light); }
.summary-item.bmi-ok { background: var(--color-primary-bg); }
.summary-item.bmi-high { background: var(--color-accent-light); }

/* Summary compact overrides */
.summary-grid-compact .summary-item {
    padding: var(--spacing-xs) var(--spacing-sm);
}

.summary-grid-compact .summary-label {
    font-size: 10px;
}

.summary-grid-compact .summary-val {
    font-size: var(--font-size-sm);
}

/* Import Banner */
.import-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    background: var(--color-secondary-light);
    border: 2px solid var(--color-secondary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.import-banner p {
    font-size: var(--font-size-sm);
    color: var(--color-text);
    margin: 0;
}

/* Confirm Toast Override */
.confirm-toast {
    box-shadow: 0 8px 32px rgba(0,0,0,0.3) !important;
}

/* --------------------------------------------------------------------------
   Saved Summary
   -------------------------------------------------------------------------- */
.summary-card {
    background: var(--color-bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    border: 1px solid var(--color-border-light);
    padding: var(--spacing-xl);
}

.summary-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.summary-header .section-title {
    margin-bottom: 0;
}

.summary-actions {
    display: flex;
    gap: var(--spacing-xs);
}

.summary-icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg);
    cursor: pointer;
    font-size: 16px;
    line-height: 1;
    transition: all var(--transition-fast);
    padding: 0;
}

.summary-icon-btn:hover {
    background: var(--color-primary-bg);
    border-color: var(--color-primary-light);
}

.summary-icon-btn--danger:hover {
    background: var(--color-accent-light);
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.summary-grid-compact {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xs);
}

@media (min-width: 768px) {
    .summary-grid-compact {
        grid-template-columns: repeat(4, 1fr);
    }
}

.summary-item {
    display: flex;
    flex-direction: column;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    background: var(--color-bg);
    min-width: 0;
}

.summary-item .summary-label {
    margin-bottom: 2px;
}

.summary-item .summary-val {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.summary-item--highlight {
    background: var(--color-primary-bg);
    font-weight: var(--font-weight-semibold);
}

.summary-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.summary-val {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
}

/* --------------------------------------------------------------------------
   Weight Tracker
   -------------------------------------------------------------------------- */

/* Weight Chart */
.weight-chart-container {
    background: var(--color-bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
    border: 1px solid var(--color-border-light);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    overflow: hidden;
}

.weight-chart-container canvas {
    width: 100%;
    display: block;
}

/* Weight List */
.weight-list-container {
    background: var(--color-bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
    border: 1px solid var(--color-border-light);
    overflow-x: auto;
    margin-bottom: var(--spacing-xl);
}

.weight-table {
    font-size: var(--font-size-xs);
    table-layout: fixed;
}

.weight-table th,
.weight-table td {
    padding: var(--spacing-xs) var(--spacing-sm);
}

.weight-table th {
    position: sticky;
    top: 0;
    font-size: 11px;
    white-space: nowrap;
}

/* Feste Spaltenbreiten */
.weight-table th:nth-child(1),
.weight-table td:nth-child(1) { width: 40%; }
.weight-table th:nth-child(2),
.weight-table td:nth-child(2) { width: 25%; }
.weight-table th:nth-child(3),
.weight-table td:nth-child(3) { width: 20%; }
.weight-table th:nth-child(4),
.weight-table td:nth-child(4) { width: 15%; }

.weight-table .inline-input {
    font-size: 12px;
    padding: 3px 6px;
    min-height: 0 !important;
    height: 28px !important;
    max-width: 100px;
}

.weight-row:hover {
    background: var(--color-bg);
}

/* Add row */
.weight-row--add {
    background: var(--color-primary-bg);
}

.weight-row--add .inline-input {
    width: 100%;
    padding: 3px 6px;
    border: 1px solid var(--color-primary-light);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-family: var(--font-family);
    background: var(--color-bg-white);
    color: var(--color-text);
    max-width: 100px;
    min-height: 0 !important;
    height: 28px !important;
}

.weight-row--add .inline-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px var(--color-primary-light);
}

.btn-add-new {
    display: inline-block;
    padding: 3px 10px;
    font-size: 11px;
    font-family: var(--font-family);
    font-weight: var(--font-weight-semibold);
    color: var(--color-bg-white);
    background: var(--color-primary);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-add-new:disabled {
    background: var(--color-border);
    color: var(--color-text-muted);
    cursor: default;
}

.btn-add-new:not(:disabled):hover {
    background: var(--color-primary-dark);
}

/* Clickable weight value */
.weight-clickable {
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

.weight-clickable:hover {
    background: var(--color-primary-bg);
}

/* Edit row - same layout as normal/add rows */
.weight-row--editing .inline-input {
    width: 100%;
    padding: 3px 6px;
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-family: var(--font-family);
    background: var(--color-bg-white);
    color: var(--color-text);
    min-height: 0 !important;
    height: 28px !important;
    box-sizing: border-box;
}

.weight-row--editing .inline-input:focus {
    outline: none;
    box-shadow: 0 0 0 2px var(--color-primary-light);
}

.edit-actions-cell {
    white-space: nowrap;
}

.weight-row--editing {
    background: var(--color-warning-light) !important;
}

.weight-row--editing input {
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    max-width: 130px;
}

.diff-negative { color: var(--color-primary-dark); font-weight: var(--font-weight-semibold); }
.diff-positive { color: var(--color-accent); font-weight: var(--font-weight-semibold); }
.diff-neutral { color: var(--color-text-muted); }

.actions-cell {
    white-space: nowrap;
}

.btn-icon {
    background: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    padding: 2px 5px;
    font-size: 12px;
    line-height: 1;
    transition: all var(--transition-fast);
    margin-right: 1px;
}

.btn-icon:hover {
    background: var(--color-bg);
    border-color: var(--color-primary);
}

.btn-edit:hover { border-color: var(--color-secondary); color: var(--color-secondary); }
.btn-delete:hover { border-color: var(--color-accent); color: var(--color-accent); }
.btn-save-edit { color: var(--color-primary-dark); border-color: var(--color-primary); }
.btn-cancel-edit { color: var(--color-accent); border-color: var(--color-accent); }


.btn-danger {
    color: var(--color-bg-white);
    background: var(--color-accent);
    border: 2px solid var(--color-accent);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-danger:hover {
    background: #c0392b;
    border-color: #c0392b;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer {
    background: var(--color-text);
    color: rgba(255, 255, 255, 0.7);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
    margin-top: var(--spacing-3xl);
    opacity: 0;
    transition: opacity 0.5s ease;
}

.site-footer.visible {
    opacity: 1;
}

.footer-content {
    text-align: center;
}

.footer-copyright {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: rgba(255, 255, 255, 0.9);
    margin-top: var(--spacing-lg);
}

.footer-disclaimer {
    font-size: var(--font-size-xs);
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: var(--spacing-lg);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.footer-links ul {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-md);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-xs);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-primary-light);
}

/* GitHub Badge */
.github-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: var(--spacing-md);
    padding: 5px 12px;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 20px;
    color: rgba(255,255,255,0.7);
    font-size: 12px;
    transition: all var(--transition-fast);
}

.github-badge:hover {
    background: rgba(255,255,255,0.2);
    color: #fff;
}

.github-badge svg {
    flex-shrink: 0;
}

.footer-disclaimer + .footer-links {
    /* already spaced via disclaimer margin-bottom */
    margin-right: auto;
}

.footer-nav ul {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
}

.footer-nav a {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.footer-nav a:hover {
    color: var(--color-primary-light);
}

/* --------------------------------------------------------------------------
   Animations
   -------------------------------------------------------------------------- */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Alpine cloak */
[x-cloak] { display: none !important; }

/* Sections fade in */
.section {
    animation: fadeIn 0.5s ease-out;
}

/* --------------------------------------------------------------------------
   Form Validation States
   -------------------------------------------------------------------------- */
.form-group input.field-invalid,
.form-group select.field-invalid {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-light);
}

.form-group input.field-valid,
.form-group select.field-valid {
    border-color: var(--color-primary);
}

.field-error {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-accent);
    margin-top: var(--spacing-xs);
    font-weight: var(--font-weight-medium);
}

/* --------------------------------------------------------------------------
   Results Explanation & Diet Prognosis
   -------------------------------------------------------------------------- */
.results-explanation {
    background: var(--color-primary-bg);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-lg);
    border-left: 4px solid var(--color-primary);
}

.results-explanation p {
    font-size: var(--font-size-sm);
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
    line-height: var(--line-height-relaxed);
}

.results-explanation p:last-child {
    margin-bottom: 0;
}

.result-low .result-value { color: var(--color-warning); }
.result-normal .result-value { color: var(--color-primary-dark); }
.result-high .result-value { color: var(--color-accent); }

.diet-prognosis {
    background: var(--color-warning-light);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-lg);
    border-left: 4px solid var(--color-warning);
}

.diet-prognosis p {
    font-size: var(--font-size-sm);
    color: var(--color-text);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-sm);
}

.diet-prognosis p:last-child {
    margin-bottom: 0;
}

.prognosis-hint {
    font-style: italic;
    color: var(--color-text-light) !important;
}

/* ==========================================================================
   Responsive Design (Mobile-First)
   ========================================================================== */

/* --------------------------------------------------------------------------
   Mobile Base (< 480px) - Stacked layouts, touch-friendly
   -------------------------------------------------------------------------- */
.results-grid,
.goal-cards,
.macros-grid {
    grid-template-columns: 1fr;
}

/* Mobile header: compact single row */

/* Touch-friendly form elements */
.data-table input,
.data-table select,
.form-group input,
.form-group select {
    min-height: 44px;
}

.btn {
    min-height: 48px;
}

/* Hide info column on small screens */
.data-table th:nth-child(4),
.data-table td:nth-child(4) {
    display: none;
}

.data-table tfoot td[colspan="3"] {
    font-size: var(--font-size-xs);
}

/* Smaller typography on mobile */
.result-value {
    font-size: var(--font-size-3xl);
}

.goal-calories {
    font-size: var(--font-size-2xl);
}

.macro-value {
    font-size: var(--font-size-2xl);
}

/* --------------------------------------------------------------------------
   Small Tablets (>= 480px)
   -------------------------------------------------------------------------- */
@media (min-width: 480px) {
    .results-grid {
        grid-template-columns: 1fr 1fr;
    }
}

/* --------------------------------------------------------------------------
   Tablets (>= 768px)
   -------------------------------------------------------------------------- */
@media (min-width: 768px) {
    :root {
        --font-size-3xl: 2.25rem;
        --font-size-4xl: 2.75rem;
    }

    .container {
        padding: 0 var(--spacing-xl);
    }

    .section {
        padding: var(--spacing-3xl) 0 0;
    }

    /* Show desktop nav, hide burger */
    .burger-btn {
        display: none;
    }

    .header-nav-desktop {
        display: block;
    }

    .site-header {
        padding: var(--spacing-lg) 0;
    }

    .header-subtitle {
        display: block;
    }

    .header-title {
        font-size: var(--font-size-2xl);
        margin-bottom: var(--spacing-xs);
    }

    .header-logo {
        font-size: var(--font-size-4xl);
        filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
    }

    .header-brand {
        gap: var(--spacing-md);
    }

    /* Show info column on tablets+ */
    .data-table th:nth-child(4),
    .data-table td:nth-child(4) {
        display: table-cell;
    }

    .data-table tfoot td[colspan="3"] {
        font-size: var(--font-size-sm);
    }

    .goal-cards {
        grid-template-columns: repeat(3, 1fr);
    }

    .macros-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .result-value {
        font-size: var(--font-size-4xl);
    }

    .goal-calories {
        font-size: var(--font-size-3xl);
    }

    .macro-value {
        font-size: var(--font-size-3xl);
    }

    .calc-form {
        padding: var(--spacing-2xl);
    }

    .data-table select.pal-tat {
        min-width: 350px;
    }
}

/* --------------------------------------------------------------------------
   Desktop (>= 1024px)
   -------------------------------------------------------------------------- */
@media (min-width: 1024px) {
    :root {
        --container-max-width: 1040px;
    }

    .header-bar {
        gap: var(--spacing-lg);
    }

    .header-right {
        flex-direction: row;
        align-items: center;
        gap: var(--spacing-md);
    }

    .header-nav-desktop ul {
        gap: var(--spacing-xl);
    }

    .header-nav-desktop a {
        font-size: var(--font-size-sm);
    }
}

/* --------------------------------------------------------------------------
   Large Desktop (>= 1200px)
   -------------------------------------------------------------------------- */
@media (min-width: 1200px) {
    :root {
        --container-max-width: 1120px;
    }
}

/* --------------------------------------------------------------------------
   Print Styles
   -------------------------------------------------------------------------- */
@media print {
    .site-header,
    .site-footer,
    .header-nav-desktop,
    .mobile-nav,
    .burger-btn,
    .btn {
        display: none;
    }

    body {
        background: white;
        color: black;
    }

    .section {
        page-break-inside: avoid;
    }

    .hidden {
        display: block !important;
    }

    .result-card,
    .goal-card,
    .macro-card {
        box-shadow: none;
        border: 1px solid #ccc;
    }
}

/* --------------------------------------------------------------------------
   Accessibility: Reduced Motion
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}

/* --------------------------------------------------------------------------
   Focus Styles (Keyboard Navigation)
   -------------------------------------------------------------------------- */
*:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* --------------------------------------------------------------------------
   Cross-Browser Vendor Prefixes & Fallbacks
   -------------------------------------------------------------------------- */

/* Sticky header fallback */
.site-header {
    position: -webkit-sticky;
    position: sticky;
}

/* Flexbox vendor prefixes for nav/header */
.header-brand,
.header-nav-desktop ul,
.footer-links ul {
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
}

.header-brand {
    -webkit-box-align: center;
    -webkit-align-items: center;
    -ms-flex-align: center;
    align-items: center;
}

/* Grid fallback for older browsers */
@supports not (display: grid) {
    .results-grid,
    .goal-cards,
    .macros-grid {
        display: -webkit-box;
        display: -webkit-flex;
        display: -ms-flexbox;
        display: flex;
        -webkit-flex-wrap: wrap;
        -ms-flex-wrap: wrap;
        flex-wrap: wrap;
    }

    .results-grid > *,
    .goal-cards > *,
    .macros-grid > * {
        -webkit-box-flex: 1;
        -webkit-flex: 1 1 280px;
        -ms-flex: 1 1 280px;
        flex: 1 1 280px;
        margin: 0.5rem;
    }
}

/* User-select vendor prefix */
.btn {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

/* Transform vendor prefixes */
.btn-primary:hover,
.result-card:hover,
.goal-card:hover {
    -webkit-transform: translateY(-2px);
    -ms-transform: translateY(-2px);
    transform: translateY(-2px);
}

.btn:active,
.btn-primary:active {
    -webkit-transform: translateY(1px);
    -ms-transform: translateY(1px);
    transform: translateY(1px);
}

/* Animation vendor prefixes */
@-webkit-keyframes fadeIn {
    from { opacity: 0; -webkit-transform: translateY(10px); transform: translateY(10px); }
    to { opacity: 1; -webkit-transform: translateY(0); transform: translateY(0); }
}

/* Appearance vendor prefix for form elements */
.form-group input,
.form-group select {
    -webkit-appearance: none;
    -moz-appearance: none;
    -ms-appearance: none;
    appearance: none;
}

/* Gradient vendor prefixes */
.site-header {
    background: -webkit-linear-gradient(315deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
}

.btn-primary {
    background: -webkit-linear-gradient(315deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
}

/* IE11: CSS Custom Properties fallback note
   IE11 does not support CSS Custom Properties.
   For IE11 support, a PostCSS plugin or pre-processor would be needed.
   Modern browsers (Chrome 49+, Firefox 31+, Safari 9.1+, Edge 15+) fully support them. */