/* ========================================
   Side Blue - Japanese Top-Level Design
   Mobile-First, Wabi-Sabi Aesthetic
   ======================================== */

/* ========================================
   CSS Variables (Design Tokens)
   ======================================== */
:root {
    /* Colors - Side Blue Palette */
    --color-primary: #1E3A8A; /* Deep Blue (Kawasemi) */
    --color-primary-light: #60A5FA;
    --color-primary-dark: #1E40AF;
    --color-accent: #D4AF37; /* Champagne Gold */
    --color-accent-light: #E8C44C;
    --color-accent-dark: #B8941F;
    
    /* Neutrals */
    --color-white: #FFFFFF;
    --color-gray-50: #F9FAFB;
    --color-gray-100: #F3F4F6;
    --color-gray-200: #E5E7EB;
    --color-gray-300: #D1D5DB;
    --color-gray-600: #4B5563;
    --color-gray-700: #374151;
    --color-gray-800: #1F2937;
    --color-gray-900: #111827;
    --color-black: #0F172A;
    
    /* Typography */
    --font-primary: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-accent: 'Montserrat', sans-serif;
    
    /* Font Sizes (Mobile-First) */
    --font-size-xs: 0.75rem;    /* 12px */
    --font-size-sm: 0.875rem;   /* 14px */
    --font-size-base: 1rem;     /* 16px */
    --font-size-lg: 1.125rem;   /* 18px */
    --font-size-xl: 1.25rem;    /* 20px */
    --font-size-2xl: 1.5rem;    /* 24px */
    --font-size-3xl: 1.875rem;  /* 30px */
    --font-size-4xl: 2.25rem;   /* 36px */
    --font-size-5xl: 3rem;      /* 48px */
    
    /* Spacing (8px base) */
    --spacing-xs: 0.5rem;   /* 8px */
    --spacing-sm: 1rem;     /* 16px */
    --spacing-md: 1.5rem;   /* 24px */
    --spacing-lg: 2rem;     /* 32px */
    --spacing-xl: 3rem;     /* 48px */
    --spacing-2xl: 4rem;    /* 64px */
    --spacing-3xl: 6rem;    /* 96px */
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal: 1040;
    --z-tooltip: 1050;
}

/* ========================================
   Reset & Base Styles
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: 1.7;
    color: var(--color-gray-800);
    background-color: var(--color-white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-base);
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul {
    list-style: none;
}

/* ========================================
   Utility Classes
   ======================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

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

.section-light {
    background-color: var(--color-gray-50);
}

.section-dark {
    background-color: var(--color-primary);
    color: var(--color-white);
}

/* Responsive Line Breaks */
.br-mobile {
    display: inline;
}

.br-tablet,
.br-desktop {
    display: none;
}

/* ========================================
   Animation Classes
   ======================================== */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   Header
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.header.header-hidden {
    transform: translateY(-100%);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 700;
    font-size: var(--font-size-lg);
    color: var(--color-primary);
}

.logo-img {
    height: 40px;
    width: auto;
}

.logo-text {
    font-family: var(--font-accent);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    width: 30px;
    height: 24px;
    z-index: var(--z-tooltip);
}

.mobile-menu-toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background-color: var(--color-primary);
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Navigation */
.nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-white);
    transform: translateX(100%);
    transition: transform var(--transition-base);
    overflow-y: auto;
}

.nav.active {
    transform: translateX(0);
}

.nav-list {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.nav-link {
    display: block;
    padding: var(--spacing-sm);
    font-weight: 500;
    font-size: var(--font-size-lg);
    color: var(--color-gray-800);
    border-radius: var(--radius-md);
    transition: background-color var(--transition-base), color var(--transition-base);
}

.nav-link:hover,
.nav-link:focus {
    background-color: var(--color-gray-100);
    color: var(--color-primary);
}

.nav-link-cta {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-white);
    text-align: center;
    margin-top: var(--spacing-sm);
}

.nav-link-cta:hover,
.nav-link-cta:focus {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
    color: var(--color-white);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: 70px;
}

.hero-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        135deg,
        rgba(30, 58, 138, 0.85) 0%,
        rgba(30, 64, 175, 0.75) 50%,
        rgba(96, 165, 250, 0.65) 100%
    );
    z-index: 2;
}

/* Floating Shapes */
.floating-shapes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 3;
    pointer-events: none;
}

.shape {
    position: absolute;
    opacity: 0.15;
    animation: float 20s ease-in-out infinite;
}

.shape-circle {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: var(--color-accent);
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.shape-square {
    width: 80px;
    height: 80px;
    background: var(--color-white);
    top: 60%;
    right: 15%;
    animation-delay: 3s;
    transform: rotate(45deg);
}

.shape-triangle {
    width: 0;
    height: 0;
    border-left: 50px solid transparent;
    border-right: 50px solid transparent;
    border-bottom: 87px solid var(--color-accent-light);
    top: 70%;
    left: 20%;
    animation-delay: 6s;
}

.shape-curve {
    width: 120px;
    height: 60px;
    border: 4px solid var(--color-white);
    border-radius: 50% 50% 0 0;
    border-bottom: none;
    top: 30%;
    right: 25%;
    animation-delay: 9s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-30px);
    }
}

.hero-content {
    position: relative;
    z-index: 4;
    text-align: center;
    color: var(--color-white);
    padding: var(--spacing-lg);
}

.hero-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.hero-title-main {
    display: block;
    font-size: var(--font-size-4xl);
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    font-weight: 400;
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
}

.hero-description {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.hero-cta-note {
    font-size: var(--font-size-sm);
    opacity: 0.9;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    min-height: 48px; /* Touch-friendly */
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
    color: var(--color-black);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover,
.btn-primary:focus {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
    min-height: 56px;
}

.btn-extra-large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-size-xl);
    min-height: 64px;
}

.btn-pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(212, 175, 55, 0.7);
    }
    70% {
        box-shadow: 0 0 0 15px rgba(212, 175, 55, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(212, 175, 55, 0);
    }
}

.btn-glow {
    position: relative;
    overflow: hidden;
}

.btn-glow::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-glow:hover::before,
.btn-glow:focus::before {
    width: 300px;
    height: 300px;
}

/* ========================================
   Section Headers
   ======================================== */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-subtitle {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-xs);
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

.section-dark .section-title {
    color: var(--color-white);
}

.section-description {
    font-size: var(--font-size-lg);
    color: var(--color-gray-600);
    max-width: 700px;
    margin: 0 auto;
}

.section-dark .section-description {
    color: rgba(255, 255, 255, 0.9);
}

/* ========================================
   Opening Section
   ======================================== */
.opening {
    background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-white) 100%);
}

.opening-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.opening-text {
    font-size: var(--font-size-xl);
    font-weight: 500;
    margin-bottom: var(--spacing-lg);
}

.opening-highlight {
    padding: var(--spacing-lg);
    background-color: var(--color-white);
    border-left: 4px solid var(--color-accent);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

.opening-highlight p {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-primary);
}

/* ========================================
   Features Section
   ======================================== */
.features-grid {
    display: grid;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.feature-card {
    padding: var(--spacing-xl);
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: 50%;
    font-size: var(--font-size-2xl);
    color: var(--color-white);
}

.feature-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.feature-description {
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
    line-height: 1.7;
}

.features-cta {
    text-align: center;
}

/* ========================================
   Schedule Section
   ======================================== */
.schedule-info {
    display: grid;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.schedule-card {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.schedule-icon {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-accent);
    border-radius: 50%;
    font-size: var(--font-size-xl);
    color: var(--color-black);
}

.schedule-content h3 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.schedule-content p {
    font-size: var(--font-size-base);
    line-height: 1.6;
}

.schedule-note {
    display: block;
    font-size: var(--font-size-sm);
    opacity: 0.8;
    margin-top: var(--spacing-xs);
}

.calendar-container {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-xl);
}

.calendar-wrapper {
    position: relative;
    width: 100%;
    padding-bottom: 75%; /* 4:3 Aspect Ratio */
    border-radius: var(--radius-md);
    overflow: hidden;
}

.calendar-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.calendar-note {
    margin-top: var(--spacing-md);
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.section-dark .calendar-note {
    color: rgba(255, 255, 255, 0.8);
}

/* ========================================
   Lesson Section
   ======================================== */
.lesson-flow {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.lesson-step {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.lesson-step-number {
    width: 60px;
    height: 60px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: 50%;
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-white);
    font-family: var(--font-accent);
}

.lesson-step-content h3 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--color-primary);
}

.lesson-step-content p {
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
    line-height: 1.6;
}

.lesson-recommend {
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-white) 100%);
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-primary-light);
}

.lesson-recommend-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--color-primary);
}

.lesson-recommend-list {
    display: grid;
    gap: var(--spacing-sm);
}

.lesson-recommend-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    font-size: var(--font-size-base);
    color: var(--color-gray-700);
}

.lesson-recommend-list i {
    color: var(--color-accent);
    font-size: var(--font-size-lg);
    flex-shrink: 0;
    margin-top: 2px;
}

/* ========================================
   Pricing Section
   ======================================== */
.pricing-grid {
    display: grid;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.pricing-card {
    padding: var(--spacing-xl);
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    position: relative;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.pricing-card-featured {
    border: 2px solid var(--color-accent);
    box-shadow: var(--shadow-xl);
}

.pricing-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
    color: var(--color-black);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.pricing-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.pricing-period {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-md);
}

.pricing-price {
    margin: var(--spacing-md) 0;
}

.pricing-amount {
    font-size: var(--font-size-4xl);
    font-weight: 900;
    color: var(--color-primary);
    font-family: var(--font-accent);
}

.pricing-unit {
    font-size: var(--font-size-xl);
    font-weight: 700;
}

.pricing-per {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin-top: var(--spacing-xs);
}

.pricing-description {
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-md);
}

.pricing-features {
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.pricing-features li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
}

.pricing-features i {
    color: var(--color-accent);
    margin-top: 2px;
    flex-shrink: 0;
}

.pricing-options {
    display: grid;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.pricing-option {
    padding: var(--spacing-md);
    background-color: var(--color-gray-50);
    border-radius: var(--radius-md);
}

.pricing-type {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-gray-600);
    margin-top: var(--spacing-xs);
}

.pricing-cta {
    text-align: center;
}

.pricing-cta-note {
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

/* ========================================
   Instructors Section
   ======================================== */
.instructors-content {
    display: grid;
    gap: var(--spacing-xl);
}

.instructors-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.instructors-image img {
    width: 100%;
    max-width: 350px;
    margin: 0 auto;
}

.instructors-name {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--color-primary);
}

.instructors-role {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: var(--spacing-lg);
}

.instructors-credentials {
    margin-bottom: var(--spacing-lg);
}

.instructors-credentials h4 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.instructors-list {
    display: grid;
    gap: var(--spacing-sm);
}

.instructors-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    font-size: var(--font-size-base);
    color: var(--color-gray-700);
}

.instructors-list i {
    color: var(--color-accent);
    font-size: var(--font-size-lg);
    flex-shrink: 0;
    margin-top: 2px;
}

.instructors-philosophy {
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-white) 100%);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-accent);
    margin-bottom: var(--spacing-lg);
}

.instructors-philosophy h4 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.instructors-philosophy p {
    font-size: var(--font-size-base);
    color: var(--color-gray-700);
    line-height: 1.7;
}

.instructors-studio {
    padding: var(--spacing-lg);
    background-color: var(--color-gray-50);
    border-radius: var(--radius-md);
}

.instructors-studio h4 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.instructors-studio p {
    font-size: var(--font-size-base);
    color: var(--color-gray-700);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.instructors-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-primary);
    font-weight: 600;
    transition: color var(--transition-base);
}

.instructors-link:hover,
.instructors-link:focus {
    color: var(--color-primary-dark);
}

/* ========================================
   Timing Section
   ======================================== */
.timing-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.timing-description {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
}

.timing-text {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-2xl);
    opacity: 0.9;
}

.timing-backup {
    padding: var(--spacing-xl);
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.timing-backup h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
}

.timing-logos {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-lg);
}

.timing-logo-item p {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.timing-logo-divider {
    font-size: var(--font-size-2xl);
    font-weight: 300;
    opacity: 0.7;
}

.timing-note {
    font-size: var(--font-size-base);
    opacity: 0.9;
}

/* ========================================
   Join Section
   ======================================== */
.join-steps {
    display: grid;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.join-step {
    padding: var(--spacing-xl);
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
}

.join-step-number {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-white);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 700;
    font-family: var(--font-accent);
    margin-bottom: var(--spacing-md);
}

.join-step-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
    border-radius: 50%;
    font-size: var(--font-size-3xl);
    color: var(--color-black);
}

.join-step-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.join-step-description {
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.join-step-highlight {
    padding: var(--spacing-md);
    background: linear-gradient(135deg, #FEF3C7 0%, #FDE68A 100%);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-md);
}

.join-step-highlight p {
    margin-bottom: var(--spacing-xs);
}

.join-step-highlight-text {
    font-size: var(--font-size-lg);
}

.highlight-free {
    color: var(--color-accent-dark);
    font-weight: 700;
}

.join-step-note {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.join-step-info {
    padding: var(--spacing-md);
    background-color: var(--color-gray-50);
    border-radius: var(--radius-md);
    text-align: left;
    margin-top: var(--spacing-md);
}

.join-step-info p {
    font-size: var(--font-size-base);
    color: var(--color-gray-700);
}

.join-step-info p:first-child {
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.join-note {
    text-align: center;
    padding: var(--spacing-md);
    background-color: var(--color-gray-50);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-xl);
}

.join-note p {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-base);
    color: var(--color-gray-700);
}

.join-note i {
    color: var(--color-accent);
}

.join-cta {
    text-align: center;
}

.join-cta-note {
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

/* ========================================
   FAQ Section
   ======================================== */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
    display: grid;
    gap: var(--spacing-md);
}

.faq-item {
    background-color: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    text-align: left;
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-gray-800);
    background-color: var(--color-white);
    border: none;
    cursor: pointer;
    transition: background-color var(--transition-base);
    min-height: 56px; /* Touch-friendly */
}

.faq-question:hover,
.faq-question:focus {
    background-color: var(--color-gray-50);
}

.faq-question i {
    font-size: var(--font-size-sm);
    color: var(--color-primary);
    transition: transform var(--transition-base);
    flex-shrink: 0;
}

.faq-question[aria-expanded="true"] i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
}

.faq-question[aria-expanded="true"] + .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 var(--spacing-md) var(--spacing-md);
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
    line-height: 1.7;
}

/* ========================================
   Final CTA Section
   ======================================== */
.final-cta {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
}

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

.final-cta-title {
    font-size: var(--font-size-3xl);
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
}

.final-cta-description {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
    opacity: 0.95;
}

.final-cta-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
}

.final-cta-note i {
    flex-shrink: 0;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-2xl) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

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

.footer-logo {
    max-width: 200px;
    margin: 0 auto var(--spacing-md);
}

.footer-tagline {
    font-size: var(--font-size-sm);
    opacity: 0.9;
}

.footer-links {
    display: grid;
    gap: var(--spacing-lg);
}

.footer-column h4 {
    font-size: var(--font-size-base);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.footer-column ul {
    display: grid;
    gap: var(--spacing-xs);
}

.footer-column a {
    font-size: var(--font-size-sm);
    opacity: 0.9;
    transition: opacity var(--transition-base);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.footer-column a:hover,
.footer-column a:focus {
    opacity: 1;
}

.footer-backup {
    text-align: center;
    padding: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    margin-bottom: var(--spacing-lg);
}

.footer-backup h4 {
    font-size: var(--font-size-base);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.footer-backup p {
    font-size: var(--font-size-sm);
    opacity: 0.9;
}

.footer-credit {
    text-align: center;
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    margin-bottom: var(--spacing-md);
}

.footer-credit p {
    font-size: var(--font-size-sm);
    opacity: 0.9;
}

.footer-credit a {
    color: var(--color-accent);
    font-weight: 600;
    text-decoration: underline;
}

.footer-note {
    font-size: var(--font-size-xs);
    opacity: 0.8;
    margin-top: var(--spacing-xs);
}

.footer-bottom {
    text-align: center;
    font-size: var(--font-size-xs);
    opacity: 0.7;
}

/* ========================================
   Tablet (768px and up)
   ======================================== */
@media (min-width: 768px) {
    /* Typography */
    .hero-title-main {
        font-size: var(--font-size-5xl);
    }
    
    .section-title {
        font-size: var(--font-size-4xl);
    }
    
    /* Responsive Line Breaks */
    .br-mobile {
        display: none;
    }
    
    .br-tablet {
        display: inline;
    }
    
    /* Header */
    .mobile-menu-toggle {
        display: none;
    }
    
    .nav {
        position: static;
        background-color: transparent;
        transform: translateX(0);
    }
    
    .nav-list {
        flex-direction: row;
        align-items: center;
        padding: 0;
        gap: var(--spacing-md);
    }
    
    .nav-link {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-base);
    }
    
    .nav-link-cta {
        margin-top: 0;
        padding: var(--spacing-xs) var(--spacing-md);
    }
    
    /* Grids */
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .schedule-info {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .instructors-content {
        grid-template-columns: 1fr 1.5fr;
        align-items: start;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
        text-align: left;
    }
    
    .footer-brand {
        text-align: left;
    }
    
    .footer-logo {
        margin: 0 0 var(--spacing-md);
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Calendar */
    .calendar-wrapper {
        padding-bottom: 60%; /* Wider aspect ratio */
    }
}

/* ========================================
   Desktop (1024px and up)
   ======================================== */
@media (min-width: 1024px) {
    /* Container */
    .container {
        padding: 0 var(--spacing-lg);
    }
    
    /* Responsive Line Breaks */
    .br-tablet {
        display: none;
    }
    
    .br-desktop {
        display: inline;
    }
    
    /* Section Padding */
    .section-padding {
        padding: var(--spacing-3xl) 0;
    }
    
    /* Hero */
    .hero-title-main {
        font-size: 4rem; /* 64px */
    }
    
    /* Join Steps */
    .join-steps {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ========================================
   Print Styles
   ======================================== */
@media print {
    .header,
    .mobile-menu-toggle,
    .floating-shapes,
    .btn,
    .footer {
        display: none !important;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.5;
        color: #000;
    }
    
    .section-padding {
        padding: 1cm 0;
    }
}