/* ===================================
   OTTPlayer.Online - Minimalist Theme
   Clean, Simple, Typography-focused
   =================================== */

:root {
    /* Minimal Color Palette */
    --color-black: #000000;
    --color-white: #ffffff;
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;

    --color-accent: #2563eb;
    /* Royal Blue */
    --color-accent-hover: #1d4ed8;

    /* Semantic Colors */
    --bg-primary: var(--color-white);
    --bg-secondary: var(--color-gray-50);
    --bg-card: var(--color-white);
    --text-primary: var(--color-gray-900);
    --text-secondary: var(--color-gray-600);
    --border-color: var(--color-gray-200);
    --border-hover: var(--color-gray-300);

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

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

    /* Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;

    /* Shadows (Minimal) */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

    /* Transitions */
    --transition: all 0.2s ease;

    /* Interactive Background */
    --pattern-color: rgba(0, 0, 0, 0.05);
    --spotlight-color: rgba(37, 99, 235, 0.08);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out forwards;
}

/* Dark Mode */
[data-theme="dark"] {
    --bg-primary: #0a0a0a;
    --bg-secondary: #171717;
    --bg-card: #171717;
    --text-primary: #ededed;
    --text-secondary: #a1a1aa;
    --border-color: #262626;
    --border-hover: #404040;
    --color-accent: #3b82f6;
    --color-accent-hover: #60a5fa;
    --pattern-color: rgba(255, 255, 255, 0.07);
    --spotlight-color: rgba(59, 130, 246, 0.15);
}

/* ===================================
   Global Styles
   =================================== */

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background-color: transparent;
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

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

ul {
    list-style: none;
}

/* ===================================
   Navigation
   =================================== */

.navbar {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

[data-theme="dark"] .navbar {
    background: rgba(10, 10, 10, 0.8);
}

.navbar .container {
    max-width: 1200px;
    padding: 0 var(--spacing-sm);
}

.navbar-brand {
    font-weight: 600;
    font-size: 1.25rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 0;
}

.navbar-brand i {
    font-size: 1.5rem;
    color: var(--color-accent);
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary) !important;
    padding: 0.5rem 1rem !important;
    border-radius: var(--radius-md);
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary) !important;
    background-color: var(--bg-secondary);
}

.lang-selector,
.theme-toggle {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    padding: 0.4rem 0.8rem;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
}

.lang-selector:hover,
.theme-toggle:hover {
    border-color: var(--text-secondary);
    background-color: var(--bg-secondary);
}

/* ===================================
   Hero Section
   =================================== */

.hero-section {
    padding: 6rem 1rem 4rem;
    text-align: center;
    background: var(--bg-primary);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 3rem;
    font-weight: 400;
}

/* ===================================
   Input Section
   =================================== */

.url-input-container {
    max-width: 800px;
    margin: 0 auto;
}

.input-group {
    background: var(--bg-card);
    /* border: 1px solid var(--border-color); */
    /* border-radius: var(--radius-lg); */
    padding: 0.5rem;
    /* box-shadow: var(--shadow-sm); */
    transition: var(--transition);
    display: flex;
    gap: 0.5rem;
}

.input-group:focus-within {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.url-input {
    border: none;
    background: transparent;
    padding: 1rem;
    font-size: 1rem;
    color: var(--text-primary);
    width: 100%;
    outline: none;
}

.btn-play {
    background-color: var(--color-accent);
    color: white;
    border: none;
    padding: 0.75rem 2rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-play:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-1px);
}

.btn-example {
    margin-top: 1rem;
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
}

.btn-example:hover {
    border-color: var(--text-primary);
    color: var(--text-primary);
}

/* ===================================
   Player Section
   =================================== */

.player-container {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    background: #000;
}

.video-js {
    width: 100%;
    aspect-ratio: 16/9;
}

/* ===================================
   Features Section
   =================================== */

.features-section {
    padding: 5rem 1rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
}

.section-title {
    font-size: 2.25rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.feature-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    height: 100%;
    transition: var(--transition);
}

.feature-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-2px);
}

.feature-icon {
    font-size: 2rem;
    color: var(--color-accent);
    margin-bottom: 1.5rem;
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.feature-description {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* ===================================
   Blog Section
   =================================== */

.blog-hero {
    padding: 6rem 1rem;
    text-align: center;
    background: var(--bg-secondary);
    margin-bottom: 4rem;
}

.blog-hero h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.blog-hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem 4rem;
}

.blog-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
}

.blog-card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
}

.blog-card-image {
    height: 200px;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: var(--text-secondary);
}

.blog-card-content {
    padding: 1.5rem;
}

.blog-card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.blog-card-excerpt {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.blog-card-link {
    color: var(--color-accent);
    font-weight: 500;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* ===================================
   Footer
   =================================== */

.footer {
    background: var(--bg-secondary);
    padding: 4rem 1rem 2rem;
    border-top: 1px solid var(--border-color);
}

[data-theme="dark"] .footer {
    background: #000000;
    border-top: 1px solid #262626;
}

.footer h5,
.footer h6 {
    color: var(--text-primary);
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.footer p,
.footer-links a {
    color: var(--color-gray-700);
    font-size: 0.95rem;
    transition: var(--transition);
}

[data-theme="dark"] .footer p,
[data-theme="dark"] .footer-links a {
    color: var(--text-secondary);
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a:hover {
    color: var(--color-accent);
    text-decoration: underline;
}

.footer-bottom {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
    font-size: 0.875rem;
}

/* ===================================
   Utilities
   =================================== */

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

.mb-4 {
    margin-bottom: 1.5rem;
}

.mt-4 {
    margin-top: 1.5rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-section {
        padding: 4rem 1rem 2rem;
    }

    .input-group {
        flex-direction: column;
    }

    .btn-play {
        width: 100%;
    }
}

/* ===================================
   How to Use Section
   =================================== */

.howto-section {
    padding: 6rem 1rem;
    background: var(--bg-primary);
    position: relative;
}

.step-card {
    position: relative;
    padding: 2rem;
    height: 100%;
    text-align: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.step-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
}

.step-icon-wrapper {
    position: relative;
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    background: var(--bg-secondary);
    color: var(--color-accent);
    font-size: 2rem;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.step-card:hover .step-icon-wrapper {
    background: var(--color-accent);
    color: white;
    border-color: var(--color-accent);
}

.step-number {
    position: absolute;
    top: -5px;
    right: -5px;
    width: 28px;
    height: 28px;
    background: var(--text-primary);
    color: var(--bg-primary);
    border-radius: 50%;
    font-size: 0.875rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--bg-card);
    transition: var(--transition);
}

.step-card:hover .step-number {
    background: white;
    color: var(--color-accent);
}

.step-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.step-text {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
}

/* ===================================
   Accordion (FAQ)
   =================================== */

.accordion-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    margin-bottom: 0.5rem;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.accordion-button {
    background: var(--bg-card);
    color: var(--text-primary);
    font-weight: 600;
    padding: 1rem 1.25rem;
    border: none;
}

.accordion-button:not(.collapsed) {
    background: var(--bg-secondary);
    color: var(--color-accent);
}

.accordion-button:focus {
    box-shadow: none;
    border-color: var(--border-color);
}

.accordion-button::after {
    filter: var(--bs-accordion-btn-icon-filter, none);
}

[data-theme="dark"] .accordion-button::after {
    filter: invert(1);
}

.accordion-body {
    background: var(--bg-card);
    color: var(--text-primary);
    padding: 1rem 1.25rem;
}

/* ===================================
   Interactive Background
   =================================== */

.interactive-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    z-index: -1;
    background-color: var(--bg-primary);
    transition: background-color 0.3s ease;
    overflow: hidden;
}

/* Dot Pattern */
.interactive-bg::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(var(--pattern-color) 1px, transparent 1px);
    background-size: 30px 30px;
}

/* Mouse Spotlight */
.interactive-bg::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(800px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
            var(--spotlight-color),
            transparent 40%);
}