/* ==========================================================================
   EDUX LANDING PAGE - EDITORIAL SERIF STYLE SYSTEM
   ========================================================================== */

:root {
    /* Color Palette */
    --bg-white: #FFFFFF;
    --bg-light: #F9FAFB;
    --color-dark: #111111;
    --color-muted: #555555;
    --color-primary: #1E293B; /* Navy Slate for structure */
    --color-accent: #DFE332;  /* Electric Lime — brand green */
    --color-accent-dark: #b8bc00; /* Darker lime for contrast */
    --color-link: #0066CC;    /* Editorial interactive blue */
    --border-color: #E5E7EB;  /* Elegant thin gray borders */
    --border-dark: #111111;
    
    /* Layout */
    --container-width: 1100px;
    --header-height: 70px;
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

html {
    scroll-behavior: smooth;
    background-color: var(--bg-white);
}

body {
    font-family: 'Times New Roman', Times, Baskerville, Georgia, serif;
    color: var(--color-dark);
    background-color: var(--bg-white);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Times New Roman', Times, Baskerville, Georgia, serif;
    font-weight: 700;
    color: var(--color-dark);
    line-height: 1.2;
    letter-spacing: -0.01em;
}

a {
    color: var(--color-link);
    text-decoration: none;
    transition: var(--transition);
}
a:hover {
    text-decoration: underline;
}

/* Structural Components */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

section {
    padding: 80px 0;
    border-bottom: 1px solid var(--border-color);
}

.section-head {
    max-width: 700px;
    margin-bottom: 50px;
}

.section-tag {
    display: inline-block;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-dark);
    background: var(--color-accent);
    padding: 3px 10px;
    margin-bottom: 14px;
    font-style: normal;
    font-weight: 700;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 1.15rem;
    color: var(--color-muted);
}

/* Header */
.header {
    height: var(--header-height);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    z-index: 1000;
    display: flex;
    align-items: center;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-dark);
    text-decoration: none !important;
}

.logo-text {
    letter-spacing: -0.03em;
}

.logo-x {
    width: 24px;
    height: 24px;
}

.nav {
    display: flex;
    gap: 32px;
}

.nav-link {
    color: var(--color-dark);
    font-size: 1.05rem;
}
.nav-link:hover {
    color: var(--color-link);
    text-decoration: none;
}

.header-actions .btn {
    padding: 8px 16px;
    font-size: 0.95rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-dark);
    background: transparent;
    color: var(--color-dark);
    padding: 12px 24px;
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.btn:hover {
    background: var(--color-dark);
    color: var(--bg-white);
    text-decoration: none;
}

.btn-primary {
    background: var(--color-dark);
    color: var(--bg-white);
    border-color: var(--color-dark);
}

.btn-primary:hover {
    background: var(--color-accent);
    color: var(--color-dark);
    border-color: var(--color-accent);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
}
.btn-outline:hover {
    border-color: var(--border-dark);
    background: transparent;
    color: var(--color-dark);
}

.btn-ghost {
    background: transparent;
    border: none;
}
.btn-ghost:hover {
    background: var(--bg-light);
    color: var(--color-dark);
}

.btn-lg {
    padding: 14px 32px;
    font-size: 1.15rem;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.9rem;
}

.btn-block {
    width: 100%;
}

/* Hero Section */
.hero {
    background: var(--bg-white);
    padding: 100px 0 80px;
}

.hero-inner {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 60px;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    border: 1px solid var(--border-color);
    font-size: 0.9rem;
    margin-bottom: 24px;
    font-style: italic;
    color: var(--color-muted);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background-color: var(--color-accent);
    border-radius: 50%;
    animation: pulse 1.5s infinite;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: 20px;
    line-height: 1.1;
}

.hero-highlight {
    font-style: italic;
    font-weight: 400;
    text-decoration: underline;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-muted);
    margin-bottom: 36px;
    max-width: 540px;
}

.hero-actions {
    display: flex;
    gap: 16px;
}

.hero-image {
    position: relative;
    border: 1px solid var(--border-color);
    padding: 12px;
}

.hero-photo {
    width: 100%;
    height: auto;
    display: block;
}

/* Tools strip (Marquee) */
.tools-strip {
    padding: 40px 0;
    background: var(--bg-light);
    border-top: 1px solid var(--border-color);
    overflow: hidden;
}

.tools-label {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-muted);
    text-align: center;
    margin-bottom: 24px;
}

.marquee-wrapper {
    display: flex;
    width: 100%;
    overflow: hidden;
}

.marquee-track {
    display: flex;
    gap: 30px;
    animation: marquee 30s linear infinite;
    white-space: nowrap;
}

.tool-chip {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 16px;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    font-size: 1.05rem;
    font-weight: 600;
}

.tool-logo-svg {
    width: 22px;
    height: 22px;
    display: inline-block;
    vertical-align: middle;
}

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* About Section Grid */
.about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.about-card {
    padding: 30px;
    border: 1px solid var(--border-color);
    background: var(--bg-white);
    transition: var(--transition);
}

.about-card:hover {
    border-color: var(--color-accent);
    border-width: 2px;
}

.card-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border: 2px solid var(--color-accent);
    background: var(--color-accent);
    margin-bottom: 20px;
}

.card-icon-svg {
    width: 24px;
    height: 24px;
    color: var(--color-dark);
    display: inline-block;
    vertical-align: middle;
}

.about-card h3 {
    font-size: 1.35rem;
    margin-bottom: 12px;
}

.about-card p {
    font-size: 1rem;
    color: var(--color-muted);
}

/* Curriculum Day Timeline */
.curriculum {
    background: var(--bg-light);
}

.timeline {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 50px;
    align-items: start;
}

.timeline-nav {
    display: flex;
    flex-direction: column;
    gap: 12px;
    border-right: 1px solid var(--border-color);
    padding-right: 20px;
}

.day-btn {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    border: 1px solid transparent;
    background: transparent;
    cursor: pointer;
    text-align: left;
    transition: var(--transition);
    font-family: inherit;
}

.day-btn:hover {
    background: var(--bg-white);
}

.day-btn.active {
    background: var(--bg-white);
    border-color: var(--border-color);
    border-right-color: transparent;
}

.day-num {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--color-muted);
}
.day-btn.active .day-num {
    color: var(--color-accent-dark);
    background: var(--color-accent);
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.day-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-muted);
}
.day-btn.active .day-name {
    color: var(--color-dark);
}

.timeline-panels {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    padding: 40px;
    min-height: 380px;
}

.day-panel {
    display: none;
}
.day-panel.active {
    display: block;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.panel-label {
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-muted);
    font-style: italic;
}

.panel-title {
    font-size: 1.85rem;
    margin: 8px 0 16px;
}

.panel-text {
    font-size: 1.1rem;
    color: var(--color-muted);
    margin-bottom: 24px;
}

.panel-list {
    list-style-position: inside;
    margin-bottom: 30px;
}

.panel-list li {
    font-size: 1.05rem;
    margin-bottom: 8px;
    color: var(--color-dark);
}

.panel-meta-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    border-top: 1px solid var(--border-color);
    padding-top: 24px;
}

.meta-label {
    display: block;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-muted);
    margin-bottom: 8px;
}

.meta-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.meta-tags span {
    font-size: 0.85rem;
    padding: 4px 8px;
    border: 1px solid var(--border-color);
    background: var(--bg-light);
}

.meta-value {
    font-size: 1.05rem;
    font-weight: 700;
}

/* Final Project Section */
.project-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.project-desc {
    font-size: 1.15rem;
    color: var(--color-muted);
    margin-bottom: 30px;
}

.project-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.feature-item {
    display: flex;
    gap: 12px;
}

.feature-check {
    font-weight: bold;
    color: var(--color-accent-dark);
    font-size: 1.3rem;
    background: var(--color-accent);
    width: 28px;
    height: 28px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.feature-item h3 {
    font-size: 1.1rem;
    margin-bottom: 4px;
}

.feature-item p {
    font-size: 0.95rem;
    color: var(--color-muted);
}

.project-image-col {
    border: 1px solid var(--border-color);
    padding: 12px;
}

.project-photo {
    width: 100%;
    height: auto;
    display: block;
}

/* Why Section */
.why-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.why-card {
    padding: 30px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.why-card:hover {
    border-color: var(--color-accent);
    border-width: 2px;
}

.why-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border: 2px solid var(--color-accent);
    background: var(--color-accent);
    margin-bottom: 20px;
}

.why-card h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.why-card p {
    font-size: 0.95rem;
    color: var(--color-muted);
}

/* Experience Preview Section */
.experience-preview {
    background: var(--bg-light);
}

.preview-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

.preview-card {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.preview-card .card-icon-svg {
    width: 28px;
    height: 28px;
    color: var(--color-dark);
    flex-shrink: 0;
}

.preview-card p {
    font-size: 1.05rem;
    font-weight: 600;
}

.takeaway-box {
    border: 1px solid var(--border-dark);
    background: var(--bg-white);
    padding: 30px;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.takeaway-box h3 {
    font-size: 1.35rem;
    margin-bottom: 20px;
}

.takeaway-tags {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
}

.takeaway-tags span {
    border: 2px solid var(--color-accent);
    padding: 8px 16px;
    font-size: 0.95rem;
    font-weight: 700;
    background: var(--color-accent);
    color: var(--color-dark);
}

/* Registration Form Step System */
.register-grid {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 60px;
    align-items: start;
}

.register-desc {
    font-size: 1.15rem;
    color: var(--color-muted);
    margin-bottom: 30px;
}

.urgency-box {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border: 1px solid var(--border-color);
    background: var(--bg-light);
    font-size: 0.95rem;
}

.urgency-dot {
    width: 8px;
    height: 8px;
    background: var(--color-accent-dark);
    border-radius: 50%;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.9); opacity: 0.6; }
    50% { transform: scale(1.1); opacity: 1; }
    100% { transform: scale(0.9); opacity: 0.6; }
}

.register-form-wrapper {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    padding: 40px;
}

/* Single-step form — progress bar removed */

.form-step {
    display: none;
}

.form-step.active {
    display: block;
    animation: fadeIn 0.4s ease;
}

.form-step-title {
    font-size: 1.4rem;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

.form-group {
    margin-bottom: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

label {
    display: block;
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 8px;
}

input[type="text"],
input[type="number"],
input[type="email"],
input[type="tel"],
select,
textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    font-family: inherit;
    font-size: 1rem;
    background: var(--bg-white);
    outline: none;
    transition: var(--transition);
}

input[type="text"]:focus,
input[type="number"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
select:focus,
textarea:focus {
    border-color: var(--color-accent-dark);
    outline: 2px solid var(--color-accent);
    outline-offset: -1px;
}

.radio-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.radio-label, .check-label {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
    cursor: pointer;
    font-size: 0.95rem;
}

.checkbox-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.form-nav {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    margin-top: 30px;
}

.form-nav .btn {
    flex: 1;
}

.confirm-check {
    align-items: flex-start;
    margin-top: 15px;
}

.confirm-check input {
    margin-top: 4px;
}

/* Success State */
.form-success {
    text-align: center;
    padding: 40px 20px;
    animation: fadeIn 0.4s ease;
}

.success-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: var(--color-accent);
    color: var(--color-dark);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 2.2rem;
    margin-bottom: 24px;
    font-weight: 900;
}

.form-success h3 {
    font-size: 1.75rem;
    margin-bottom: 12px;
}

.form-success p {
    font-size: 1.1rem;
    color: var(--color-muted);
    margin-bottom: 30px;
}

/* Header Hamburger toggle for mobile drawer */
.hamburger {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 6px;
    z-index: 1100;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-dark);
    transition: var(--transition);
}

.mobile-drawer {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background: var(--bg-white);
    z-index: 999;
    padding: 40px 24px;
    border-top: 1px solid var(--border-color);
}

.mobile-drawer.open {
    display: block;
}

.mobile-drawer-nav {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.mobile-link {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-dark);
}

/* Footer styling */
.footer {
    padding: 60px 0;
    background: var(--bg-light);
}

.footer-inner {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
    align-items: center;
}

.footer-tagline {
    font-size: 1.1rem;
    color: var(--color-muted);
    margin-top: 10px;
    font-style: italic;
}

.footer-links {
    display: flex;
    justify-content: flex-end;
    gap: 24px;
}

.footer-links a {
    color: var(--color-muted);
    font-weight: 600;
}
.footer-links a:hover {
    color: var(--color-dark);
}

.footer-bottom {
    grid-column: span 2;
    border-top: 1px solid var(--border-color);
    padding-top: 24px;
    margin-top: 24px;
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    color: var(--color-muted);
}

/* Responsive Styles */
@media (max-width: 992px) {
    .hero-inner {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    
    .about-grid, .why-grid, .preview-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .project-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .register-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-inner {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 30px;
    }
    
    .footer-links {
        justify-content: center;
    }
    
    .footer-bottom {
        grid-column: span 1;
        flex-direction: column;
        gap: 12px;
    }
}

@media (max-width: 768px) {
    .header-actions {
        display: none;
    }
    
    .nav {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    /* Hamburger active morph state */
    .hamburger.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    .hamburger.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-title {
        font-size: 2.75rem;
    }
    
    .timeline {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .timeline-nav {
        flex-direction: row;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding-right: 0;
        padding-bottom: 10px;
        overflow-x: auto;
        white-space: nowrap;
    }
    
    .day-btn.active {
        border-bottom-color: transparent;
    }
    
    .about-grid, .why-grid, .preview-grid {
        grid-template-columns: 1fr;
    }
    
    .checkbox-grid {
        grid-template-columns: 1fr;
    }
}