/* FretTrain Landing Page Styles */

/* ============================================
   CSS Variables / Theme
   ============================================ */
:root {
    --color-bg-dark: #0d0d1a;
    --color-bg: #1a1a2e;
    --color-bg-light: #252542;
    --color-primary: #ffcc00;
    --color-primary-dark: #e6b800;
    --color-secondary: #00ccff;
    --color-text: #ffffff;
    --color-text-muted: #a0a0b0;
    --color-success: #4caf50;
    --color-border: #3a3a5e;
    --font-main: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --max-width: 1200px;
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background: var(--color-bg-dark);
    color: var(--color-text);
    line-height: 1.6;
}

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

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

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

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    background: var(--color-primary);
    color: #000;
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    color: #000;
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--color-bg-light);
    color: var(--color-text);
    border-color: var(--color-border);
}

.btn-secondary:hover {
    background: var(--color-border);
    color: var(--color-text);
}

.btn-outline {
    background: transparent;
    color: var(--color-text);
    border-color: var(--color-text);
}

.btn-outline:hover {
    background: var(--color-text);
    color: var(--color-bg-dark);
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.1rem;
}

/* ============================================
   Navigation
   ============================================ */
.landing-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(13, 13, 26, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo img {
    height: 50px;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    color: var(--color-text-muted);
    font-weight: 500;
}

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

.nav-auth {
    display: flex;
    align-items: center;
    gap: 15px;
}

.nav-user {
    color: var(--color-text-muted);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--color-text);
    border-radius: 2px;
    transition: var(--transition);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 60px;
    padding: 120px 20px 80px;
    max-width: var(--max-width);
    margin: 0 auto;
}

.hero h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero .highlight {
    color: var(--color-primary);
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--color-text-muted);
    margin-bottom: 30px;
    max-width: 500px;
}

.hero-cta {
    display: flex;
    gap: 15px;
    margin-bottom: 25px;
}

.hero-note {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.hero-note i {
    color: var(--color-success);
    margin-right: 5px;
}

.hero-image {
    position: relative;
}

.app-preview {
    background: var(--color-bg);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.app-preview img {
    display: block;
    width: 100%;
}

.preview-placeholder {
    padding: 100px 40px;
    text-align: center;
    color: var(--color-text-muted);
}

.preview-placeholder i {
    font-size: 5rem;
    margin-bottom: 20px;
    color: var(--color-primary);
}

/* ============================================
   Creator Section
   ============================================ */
.creator-section {
    padding: 60px 20px;
    background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-dark) 100%);
}

.creator-content {
    display: flex;
    align-items: center;
    gap: 40px;
    max-width: 900px;
    margin: 0 auto;
}

.creator-photo {
    flex-shrink: 0;
}

.creator-photo img {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--color-primary);
    box-shadow: 0 10px 30px rgba(255, 204, 0, 0.2);
}

.creator-text h2 {
    text-align: left;
    font-size: 1.8rem;
    margin-bottom: 15px;
    color: var(--color-primary);
}

.creator-text p {
    color: var(--color-text-muted);
    margin-bottom: 15px;
    line-height: 1.7;
}

.creator-cta {
    margin-top: 20px;
}

@media (max-width: 768px) {
    .creator-content {
        flex-direction: column;
        text-align: center;
    }

    .creator-text h2 {
        text-align: center;
    }

    .creator-photo {
        flex-shrink: 0;
    }

    .creator-photo img {
        width: 150px;
        height: 150px;
        max-width: 150px;
        object-fit: cover;
    }
}

/* ============================================
   Social Proof / Stats
   ============================================ */
.social-proof {
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    padding: 40px 20px;
}

.social-proof .container {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 30px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.stat-label {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

/* ============================================
   Section Styles
   ============================================ */
section {
    padding: 80px 20px;
}

section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-muted);
    font-size: 1.1rem;
    margin-bottom: 50px;
}

/* ============================================
   How It Works - Mode Cards
   ============================================ */
.modes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.mode-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 40px;
    text-align: center;
    transition: var(--transition);
}

.mode-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-primary);
}

.mode-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.learn-mode .mode-icon {
    color: var(--color-secondary);
}

.test-mode .mode-icon {
    color: var(--color-primary);
}

.mode-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.mode-card p {
    color: var(--color-text-muted);
    margin-bottom: 25px;
}

.mode-features {
    list-style: none;
    text-align: left;
    margin-bottom: 30px;
}

.mode-features li {
    padding: 8px 0;
    color: var(--color-text-muted);
}

.mode-features i {
    color: var(--color-success);
    margin-right: 10px;
}

/* ============================================
   Features Grid
   ============================================ */
.features {
    background: var(--color-bg);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--color-bg-light);
    border-radius: var(--border-radius);
    padding: 30px;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-3px);
}

.feature-icon {
    font-size: 2rem;
    color: var(--color-primary);
    margin-bottom: 15px;
}

.feature-card h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
}

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

/* ============================================
   Instruments Section
   ============================================ */
.instruments-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.instrument-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 25px;
    text-align: center;
    transition: var(--transition);
    display: block;
    color: var(--color-text);
    text-decoration: none;
}

.instrument-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-3px);
    color: var(--color-text);
}

.instrument-card i {
    font-size: 2.5rem;
    color: var(--color-secondary);
    margin-bottom: 15px;
}

.instrument-card h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.instrument-card p {
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

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

/* ============================================
   Learning Resources
   ============================================ */
.learning-section {
    background: var(--color-bg);
}

.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.resource-card {
    background: var(--color-bg-light);
    border-radius: var(--border-radius);
    padding: 30px;
    display: block;
    color: var(--color-text);
    transition: var(--transition);
    border: 1px solid transparent;
}

.resource-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-3px);
    color: var(--color-text);
}

.resource-icon {
    font-size: 2rem;
    margin-bottom: 15px;
    color: var(--color-primary);
}

.resource-card h3 {
    font-size: 1.15rem;
    margin-bottom: 10px;
}

.resource-card p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.resource-link {
    color: var(--color-secondary);
    font-weight: 500;
    font-size: 0.9rem;
}

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

/* ============================================
   Account CTA Section
   ============================================ */
.account-cta {
    background: linear-gradient(135deg, var(--color-bg-light), var(--color-bg));
    text-align: center;
}

.cta-content h2 {
    margin-bottom: 10px;
}

.cta-content > p {
    color: var(--color-text-muted);
    margin-bottom: 40px;
}

.benefits-grid {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 30px;
    margin-bottom: 40px;
}

.benefit-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-text-muted);
}

.benefit-item i {
    color: var(--color-success);
    font-size: 1.2rem;
}

.cta-buttons {
    margin-bottom: 20px;
}

.cta-note {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* ============================================
   Quick Start Paths
   ============================================ */
.start-paths {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
}

.path-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 35px;
    display: block;
    color: var(--color-text);
    transition: var(--transition);
    position: relative;
}

.path-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-5px);
    color: var(--color-text);
}

.path-number {
    position: absolute;
    top: -15px;
    left: 25px;
    width: 40px;
    height: 40px;
    background: var(--color-primary);
    color: #000;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
}

.path-card h3 {
    margin-top: 10px;
    margin-bottom: 12px;
    font-size: 1.2rem;
}

.path-card p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    margin-bottom: 20px;
}

.path-action {
    color: var(--color-secondary);
    font-weight: 500;
}

/* ============================================
   Footer
   ============================================ */
.landing-footer {
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
    padding: 60px 20px 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand img {
    margin-bottom: 15px;
}

.footer-brand p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.footer-links h4 {
    color: var(--color-text);
    font-size: 1rem;
    margin-bottom: 15px;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--color-border);
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 968px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        padding-top: 100px;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        margin: 0 auto 30px;
    }

    .hero-cta {
        justify-content: center;
        flex-wrap: wrap;
    }

    .hero-note {
        justify-content: center;
    }

    .hero-image {
        order: -1;
        max-width: 500px;
        margin: 0 auto;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links,
    .nav-auth {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    /* Mobile menu open state */
    .landing-nav.nav-open .nav-links,
    .landing-nav.nav-open .nav-auth {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-bg-dark);
        padding: 20px;
        border-bottom: 1px solid var(--color-border);
        z-index: 1000;
    }

    .landing-nav.nav-open .nav-links {
        gap: 15px;
    }

    .landing-nav.nav-open .nav-auth {
        margin-top: 15px;
        padding-top: 15px;
        border-top: 1px solid var(--color-border);
    }

    section h2 {
        font-size: 2rem;
    }

    .modes-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-brand {
        margin-bottom: 20px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }

    .hero-cta {
        flex-direction: column;
    }

    .btn-large {
        width: 100%;
        justify-content: center;
    }

    .social-proof .container {
        flex-direction: column;
    }

    .benefits-grid {
        flex-direction: column;
        align-items: center;
    }
}

/* Yellow Start App button in nav */
.btn-start-app {
    background: #ffcc00 !important;
    color: #1a1a2e !important;
    font-weight: bold;
    padding: 8px 16px;
    border-radius: 6px;
    text-decoration: none;
    transition: all 0.3s ease;
    margin-left: 10px;
}

.btn-start-app:hover {
    background: #ffd633 !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 204, 0, 0.4);
}

/* App preview link styling */
.app-preview-link {
    display: block;
    text-decoration: none;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.app-preview-link:hover {
    transform: scale(1.02);
}

.app-preview-link:hover .app-preview {
    box-shadow: 0 8px 30px rgba(255, 204, 0, 0.3);
}

/* Start App link in nav - matches other nav links with subtle highlight */
.nav-links .btn-start-app {
    background: none;
    border: none;
    padding: 1;
    font-size: inherit;
    color: #ffcc00;
    font-weight: 500;
}

.nav-links .btn-start-app:hover {
    color: #ffd633;
    background: none;
    transform: none;
    box-shadow: none;
}

/* Screenshot carousel */
.app-preview.carousel {
    position: relative;
    overflow: hidden;
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 1s ease-in-out;
}

.carousel-slide:first-child {
    position: relative; /* First image sets the container size */
}

.carousel-slide.active {
    opacity: 1;
}