/* ===================================
   CSS VARIABLES - DESIGN SYSTEM
   =================================== */

:root {
    /* Base Colors (Shared) */
    --color-accent-gold: #C9A24D;
    --color-accent-gold-hover: #B8923F;
    --color-accent-earth: #A46A4A;
    --color-accent-sage: #5F6F64;

    /* Spacing - 8px Grid System */
    --space-1: 8px;
    --space-2: 16px;
    --space-3: 24px;
    --space-4: 32px;
    --space-5: 40px;
    --space-6: 48px;
    --space-8: 64px;
    --space-10: 80px;
    --space-12: 96px;
    --space-16: 128px;
    --space-20: 160px;

    /* Typography */
    --font-headline: 'Cormorant', serif;
    --font-body: 'Inter', sans-serif;

    /* Border Radius */
    --radius-btn: 10px;
    --radius-card: 16px;

    /* Transitions */
    --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Mode (Default) - Candlelight Aesthetic */
body {
    --bg-primary: #1F1C18;
    --bg-secondary: #252118;
    --bg-card: #2A2622;
    --text-primary: #E6DED4;
    --text-secondary: #C9B8A8;
    --border-color: rgba(230, 222, 212, 0.1);
    --btn-secondary-hover-bg: #2A2622;
    --accent-gold-hero: #C9A24D;
    /* Candlelight gold for dark mode */

    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: background-color var(--transition-slow), color var(--transition-smooth);
}

/* Light Mode - Warm Daylight */
body[data-theme="light"] {
    --bg-primary: #F6F1EA;
    --bg-secondary: #F0E6DA;
    --bg-card: #FFFFFF;
    --text-primary: #2E2B28;
    --text-secondary: #6B655E;
    --border-color: rgba(46, 43, 40, 0.1);
    --btn-secondary-hover-bg: #F0E6DA;
    --accent-gold-hero: #8B6914;
    /* Darker gold for light mode contrast */
}

/* ===================================
   RESET & BASE STYLES
   =================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 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;
        scroll-behavior: auto !important;
    }
}

/* ===================================
   TYPOGRAPHY
   =================================== */

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-headline);
    font-weight: 400;
    line-height: 1.2;
}

/* ===================================
   LAYOUT UTILITIES
   =================================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

/* ===================================
   NAVIGATION
   =================================== */

.nav {
    padding: var(--space-4) var(--space-4);
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-family: var(--font-headline);
    font-size: 24px;
    font-weight: 500;
    color: var(--text-primary);
    letter-spacing: 0.5px;
}

/* Theme Toggle Button */
.theme-toggle {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.theme-toggle:hover {
    transform: scale(1.05);
    border-color: var(--color-accent-gold);
    box-shadow: 0 4px 12px rgba(201, 162, 77, 0.2);
}

.theme-toggle svg {
    position: absolute;
    color: var(--text-primary);
    transition: all var(--transition-smooth);
}

.sun-icon {
    opacity: 0;
    transform: rotate(-90deg) scale(0.5);
}

.moon-icon {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

body[data-theme="light"] .sun-icon {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

body[data-theme="light"] .moon-icon {
    opacity: 0;
    transform: rotate(90deg) scale(0.5);
}

/* ===================================
   HERO SECTION
   =================================== */

.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    padding: var(--space-8) var(--space-4);
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    overflow: hidden;
}

.hero-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    object-fit: cover;
    opacity: 0.3;
    z-index: 0;
    pointer-events: none;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 10;
}


.hero-title {
    font-size: clamp(48px, 8vw, 96px);
    font-weight: 300;
    margin-bottom: var(--space-4);
    color: var(--text-primary);
    letter-spacing: -1px;
}

.hero-title-accent {
    display: block;
    font-weight: 600;
    color: var(--accent-gold-hero);
    font-style: italic;
}

.hero-subtitle {
    font-size: clamp(18px, 2vw, 24px);
    color: var(--text-secondary);
    opacity: 0.95;
    margin-bottom: var(--space-8);
    font-weight: 300;
    letter-spacing: 0.3px;
}

.hero-cta {
    font-size: 18px;
    padding: var(--space-3) var(--space-6);
}

.hero-scroll-indicator {
    position: absolute;
    bottom: var(--space-6);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-1);
    color: var(--text-secondary);
    opacity: 0.7;
    font-size: 14px;
    animation: float 3s ease-in-out infinite;
    z-index: 10;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-8px);
    }
}

/* ===================================
   BUTTONS
   =================================== */

.btn {
    font-family: var(--font-body);
    font-size: 16px;
    font-weight: 500;
    padding: var(--space-2) var(--space-5);
    border-radius: var(--radius-btn);
    border: none;
    cursor: pointer;
    transition: all var(--transition-smooth);
    letter-spacing: 0.3px;
}

.btn-primary {
    background-color: var(--color-accent-gold);
    color: #2E2B28;
}

.btn-primary:hover {
    background-color: var(--color-accent-gold-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(201, 162, 77, 0.3);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border: 2px solid var(--color-accent-earth);
}

.btn-secondary:hover {
    background-color: var(--btn-secondary-hover-bg);
    border-color: var(--color-accent-gold);
}

/* ===================================
   FEATURES SECTION
   =================================== */

.features {
    padding: var(--space-20) var(--space-4);
    background-color: var(--bg-primary);
    position: relative;
    z-index: 10;
}

.section-title {
    font-size: clamp(36px, 5vw, 56px);
    text-align: center;
    margin-bottom: var(--space-3);
    color: var(--text-primary);
    font-weight: 400;
}

.section-subtitle {
    text-align: center;
    font-size: 18px;
    color: var(--text-secondary);
    opacity: 0.9;
    margin-bottom: var(--space-12);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-6);
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background-color: var(--bg-card);
    padding: var(--space-6);
    border-radius: var(--radius-card);
    border: 1px solid var(--border-color);
    transition: all var(--transition-smooth);
}

.feature-card:hover {
    transform: translateY(-4px);
}

.feature-icon {
    color: var(--color-accent-gold);
    margin-bottom: var(--space-4);
}

.feature-title {
    font-size: 28px;
    margin-bottom: var(--space-3);
    color: var(--text-primary);
    font-weight: 500;
}

.feature-description {
    color: var(--text-secondary);
    opacity: 0.95;
    line-height: 1.7;
}

/* ===================================
   TESTIMONIALS SECTION
   =================================== */

.testimonials {
    padding: var(--space-20) var(--space-4);
    background-color: var(--bg-secondary);
    position: relative;
    z-index: 10;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-6);
    max-width: 1200px;
    margin: 0 auto;
}

.testimonial-card {
    background-color: var(--bg-card);
    padding: var(--space-6);
    border-radius: var(--radius-card);
    border-left: 4px solid var(--color-accent-gold);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--color-accent-gold);
}

.testimonial-quote {
    font-size: 18px;
    line-height: 1.8;
    color: var(--text-primary);
    margin-bottom: var(--space-4);
    font-style: italic;
    opacity: 0.95;
}

.testimonial-author {
    margin-top: var(--space-4);
}

.author-name {
    font-weight: 600;
    color: var(--color-accent-gold);
    margin-bottom: var(--space-1);
}

.author-title {
    font-size: 14px;
    color: var(--text-secondary);
    opacity: 0.85;
}

/* ===================================
   FINAL CTA SECTION
   =================================== */

.final-cta {
    padding: var(--space-20) var(--space-4);
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    position: relative;
    z-index: 10;
}

.cta-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta-title {
    font-size: clamp(40px, 6vw, 64px);
    margin-bottom: var(--space-4);
    color: var(--text-primary);
    font-weight: 400;
}

.cta-description {
    font-size: 20px;
    color: var(--text-secondary);
    opacity: 0.95;
    margin-bottom: var(--space-8);
    line-height: 1.7;
}

.cta-buttons {
    display: flex;
    gap: var(--space-3);
    justify-content: center;
    flex-wrap: wrap;
}

/* ===================================
   FOOTER
   =================================== */

.footer {
    padding: var(--space-8) var(--space-4);
    background-color: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    position: relative;
    z-index: 10;
}

.footer-text {
    text-align: center;
    color: var(--text-secondary);
    opacity: 0.7;
    font-size: 14px;
}

/* ===================================
   PROTOCOL DETAILS SECTION
   =================================== */

.protocol-details {
    padding: var(--space-20) var(--space-4);
    background-color: var(--bg-secondary);
    position: relative;
    z-index: 10;
}

.protocol-timeline {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-6);
    max-width: 1200px;
    margin: 0 auto var(--space-8);
}

.protocol-day {
    background-color: var(--bg-card);
    border-radius: var(--radius-card);
    border: 1px solid var(--border-color);
    transition: all var(--transition-smooth);
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.protocol-day::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--color-accent-gold) 0%, var(--color-accent-earth) 100%);
    opacity: 0;
    transition: opacity var(--transition-smooth);
}

.protocol-day:hover::before {
    opacity: 1;
}

.protocol-day.expanded {
    box-shadow: 0 8px 24px rgba(201, 162, 77, 0.15);
}

.protocol-day.expanded::before {
    opacity: 1;
}

/* Protocol Day Header - Always Visible */
.protocol-day-header {
    padding: var(--space-6);
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-3);
}

.protocol-day-header .day-number {
    flex-shrink: 0;
}

.protocol-day-header .day-title {
    flex: 1;
    margin: 0;
}

.expand-icon {
    flex-shrink: 0;
    color: var(--color-accent-gold);
    transition: transform var(--transition-smooth);
    margin-top: 4px;
}

.protocol-day.expanded .expand-icon {
    transform: rotate(180deg);
}

/* Description Wrapper - Expandable */
.day-description-wrapper {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.6s cubic-bezier(0.4, 0, 0.2, 1),
        opacity 0.4s ease,
        padding 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
    padding: 0 var(--space-6);
}

.protocol-day.expanded .day-description-wrapper {
    max-height: 500px;
    /* Large enough for content */
    opacity: 1;
    padding: 0 var(--space-6) var(--space-6);
}

.day-number {
    font-family: var(--font-headline);
    font-size: 14px;
    font-weight: 600;
    color: var(--color-accent-gold);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--space-2);
}

.day-title {
    font-family: var(--font-headline);
    font-size: 24px;
    font-weight: 500;
    color: var(--text-primary);
}

.day-description {
    color: var(--text-secondary);
    line-height: 1.7;
    opacity: 0.95;
    margin: 0;
}

.protocol-note {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-6);
    background-color: var(--bg-card);
    border-radius: var(--radius-card);
    border: 1px solid var(--border-color);
    text-align: center;
}

.protocol-note p {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 16px;
    margin: 0;
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */

@media (max-width: 768px) {

    .features-grid,
    .testimonials-grid,
    .protocol-timeline {
        grid-template-columns: 1fr;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
    }
}