/* ==========================================================================
   Derin Games Studio - Main Stylesheet
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Variables
   -------------------------------------------------------------------------- */
:root {
    /* Primary Colors - Gold/Yellow from logo */
    --color-gold: #F5A623;
    --color-gold-light: #FFD700;
    --color-gold-dark: #D4770C;

    /* Secondary Colors - Brown from logo */
    --color-brown: #8B4513;
    --color-brown-dark: #3D2314;
    --color-brown-darker: #2D1810;

    /* Background Colors - Dark gaming aesthetic */
    --color-bg-primary: #0F0F1A;
    --color-bg-secondary: #1A1A2E;
    --color-bg-tertiary: #16213E;
    --color-bg-card: #1E1E32;

    /* Text Colors */
    --color-text-primary: #FFFFFF;
    --color-text-secondary: #B8B8C8;
    --color-text-muted: #6B6B7B;

    /* Accent Colors */
    --color-accent-cream: #FFF8E7;
    --color-accent-orange: #FF6B35;

    /* Gradients */
    --gradient-gold: linear-gradient(135deg, var(--color-gold-light) 0%, var(--color-gold) 50%, var(--color-gold-dark) 100%);
    --gradient-dark: linear-gradient(180deg, var(--color-bg-secondary) 0%, var(--color-bg-primary) 100%);
    --gradient-hero: linear-gradient(135deg, var(--color-bg-tertiary) 0%, var(--color-bg-primary) 50%, var(--color-brown-darker) 100%);

    /* Typography */
    --font-heading: 'Cinzel', serif;
    --font-body: 'Open Sans', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 5rem;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-gold: 0 4px 20px rgba(245, 166, 35, 0.3);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Container */
    --container-max: 1200px;
    --container-padding: 1.5rem;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text-primary);
    background: var(--color-bg-primary);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
    color: var(--color-gold-light);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-text-primary);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: var(--spacing-sm);
}

ul {
    list-style: none;
}

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

.text-center { text-align: center; }
.text-gold { color: var(--color-gold); }
.text-muted { color: var(--color-text-secondary); }

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.875rem 1.75rem;
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
}

.btn--primary {
    background: var(--gradient-gold);
    color: var(--color-brown-darker);
    box-shadow: var(--shadow-gold);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(245, 166, 35, 0.4);
    color: var(--color-brown-darker);
}

.btn--secondary {
    background: transparent;
    color: var(--color-gold);
    border: 2px solid var(--color-gold);
}

.btn--secondary:hover {
    background: var(--color-gold);
    color: var(--color-brown-darker);
}

.btn .arrow {
    font-weight: 700;
    transition: transform var(--transition-fast);
}

.btn:hover .arrow {
    transform: translateX(4px);
}

/* --------------------------------------------------------------------------
   Site Header
   -------------------------------------------------------------------------- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 15, 26, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(245, 166, 35, 0.1);
    padding: var(--spacing-sm) 0;
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.site-logo img {
    height: 100px;
    width: auto;
}

/* Navigation Toggle (Mobile) */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 20px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}

.nav-toggle__bar {
    display: block;
    width: 100%;
    height: 3px;
    background: var(--color-gold);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Main Navigation */
.main-nav__list {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.main-nav__link {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--spacing-xs) 0;
    position: relative;
}

.main-nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-gold);
    transition: width var(--transition-normal);
}

.main-nav__link:hover,
.main-nav__link.active {
    color: var(--color-gold);
}

.main-nav__link:hover::after,
.main-nav__link.active::after {
    width: 100%;
}

/* --------------------------------------------------------------------------
   Site Main
   -------------------------------------------------------------------------- */
.site-main {
    padding-top: 100px;
    min-height: calc(100vh - 300px);
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
    background: var(--gradient-hero);
    padding: var(--spacing-2xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="1" fill="rgba(245,166,35,0.1)"/></svg>') repeat;
    background-size: 50px 50px;
    opacity: 0.5;
}

.hero__content {
    position: relative;
    z-index: 1;
}

.hero__logo {
    max-width: 350px;
    margin: 0 auto var(--spacing-lg);
    filter: drop-shadow(0 10px 30px rgba(245, 166, 35, 0.3));
}

.hero__title {
    font-size: clamp(1.25rem, 3vw, 1.5rem);
    color: var(--color-text-secondary);
    font-family: var(--font-body);
    font-weight: 400;
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero__actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

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

.section--dark {
    background: var(--color-bg-secondary);
}

.section--gradient {
    background: var(--gradient-dark);
}

.section__header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section__title {
    margin-bottom: var(--spacing-sm);
    position: relative;
    display: inline-block;
}

.section__title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--gradient-gold);
    margin: var(--spacing-sm) auto 0;
    border-radius: 2px;
}

.section__subtitle {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* --------------------------------------------------------------------------
   Game Cards
   -------------------------------------------------------------------------- */
.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.game-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid rgba(245, 166, 35, 0.1);
    transition: all var(--transition-normal);
}

.game-card:hover {
    transform: translateY(-8px);
    border-color: rgba(245, 166, 35, 0.3);
    box-shadow: var(--shadow-lg), var(--shadow-gold);
}

.game-card__image {
    position: relative;
    aspect-ratio: 16/9;
    background: var(--color-bg-tertiary);
    overflow: hidden;
}

.game-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.game-card:hover .game-card__image img {
    transform: scale(1.05);
}

.game-card__status {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    padding: 0.4rem 0.8rem;
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-sm);
    background: var(--gradient-gold);
    color: var(--color-brown-darker);
}

.game-card.coming-soon .game-card__status {
    background: var(--color-bg-tertiary);
    color: var(--color-text-secondary);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.game-card__content {
    padding: var(--spacing-md);
}

.game-card__title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

.game-card__genre {
    color: var(--color-gold);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.game-card__description {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-md);
}

/* --------------------------------------------------------------------------
   Featured Game
   -------------------------------------------------------------------------- */
.featured-game {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

@media (min-width: 768px) {
    .featured-game {
        grid-template-columns: 1fr 1fr;
    }
}

.featured-game__image {
    aspect-ratio: 16/9;
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid rgba(245, 166, 35, 0.2);
}

.featured-game__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.featured-game__content h3 {
    font-size: 2rem;
    margin-bottom: var(--spacing-xs);
}

.featured-game__meta {
    color: var(--color-gold);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.featured-game__description {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    font-size: 1.05rem;
}

/* --------------------------------------------------------------------------
   About Section / Page
   -------------------------------------------------------------------------- */
.about-intro {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-intro p {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.value-card {
    background: var(--color-bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(245, 166, 35, 0.1);
    text-align: center;
    transition: all var(--transition-normal);
}

.value-card:hover {
    border-color: rgba(245, 166, 35, 0.3);
    transform: translateY(-4px);
}

.value-card__icon {
    font-size: 2.5rem;
    color: var(--color-gold);
    margin-bottom: var(--spacing-sm);
    font-family: var(--font-heading);
}

.value-card__title {
    margin-bottom: var(--spacing-xs);
}

.value-card__description {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

/* --------------------------------------------------------------------------
   Contact Section / Page
   -------------------------------------------------------------------------- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
}

@media (min-width: 768px) {
    .contact-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.contact-form {
    background: var(--color-bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(245, 166, 35, 0.1);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-primary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    background: var(--color-bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-gold);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-text-muted);
}

.contact-info h3 {
    margin-bottom: var(--spacing-md);
}

.contact-info p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
}

.contact-details {
    margin-bottom: var(--spacing-lg);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-secondary);
}

.contact-item__icon {
    color: var(--color-gold);
    font-weight: 700;
}

/* --------------------------------------------------------------------------
   Coming Soon Section
   -------------------------------------------------------------------------- */
.coming-soon {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border: 2px dashed rgba(245, 166, 35, 0.3);
}

.coming-soon__title {
    color: var(--color-gold);
    margin-bottom: var(--spacing-sm);
}

.coming-soon__text {
    color: var(--color-text-secondary);
}

/* --------------------------------------------------------------------------
   Page Header
   -------------------------------------------------------------------------- */
.page-header {
    background: var(--gradient-hero);
    padding: var(--spacing-xl) 0;
    text-align: center;
    border-bottom: 1px solid rgba(245, 166, 35, 0.1);
}

.page-header__title {
    margin-bottom: var(--spacing-xs);
}

.page-header__subtitle {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
}

/* --------------------------------------------------------------------------
   Site Footer
   -------------------------------------------------------------------------- */
.site-footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid rgba(245, 166, 35, 0.1);
    padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-logo {
    margin-bottom: var(--spacing-sm);
}

.footer-tagline {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

.site-footer h4 {
    font-size: 1rem;
    color: var(--color-gold);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.site-footer ul li {
    margin-bottom: var(--spacing-xs);
}

.site-footer ul a {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    transition: color var(--transition-fast);
}

.site-footer ul a:hover {
    color: var(--color-gold);
}

.coming-soon-text {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    font-style: italic;
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.social-link {
    color: var(--color-text-secondary);
    font-size: 0.85rem;
    padding: 0.4rem 0.6rem;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--color-gold);
    color: var(--color-brown-darker);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin: 0;
}

/* --------------------------------------------------------------------------
   Alert Messages
   -------------------------------------------------------------------------- */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

.alert--success {
    background: rgba(46, 204, 113, 0.1);
    border: 1px solid rgba(46, 204, 113, 0.3);
    color: #2ecc71;
}

.alert--error {
    background: rgba(231, 76, 60, 0.1);
    border: 1px solid rgba(231, 76, 60, 0.3);
    color: #e74c3c;
}

/* --------------------------------------------------------------------------
   404 Page
   -------------------------------------------------------------------------- */
.error-page {
    text-align: center;
    padding: var(--spacing-2xl) 0;
}

.error-page__code {
    font-size: clamp(5rem, 15vw, 10rem);
    font-family: var(--font-heading);
    color: var(--color-gold);
    line-height: 1;
    margin-bottom: var(--spacing-sm);
    text-shadow: 0 0 50px rgba(245, 166, 35, 0.3);
}

.error-page__title {
    margin-bottom: var(--spacing-md);
}

.error-page__text {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
}

/* --------------------------------------------------------------------------
   Responsive Styles
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
    }

    .nav-toggle {
        display: flex;
    }

    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--color-bg-secondary);
        padding: 100px var(--spacing-lg) var(--spacing-lg);
        transition: right var(--transition-normal);
        border-left: 1px solid rgba(245, 166, 35, 0.1);
    }

    .main-nav.is-open {
        right: 0;
    }

    .main-nav__list {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }

    .main-nav__link {
        font-size: 1.1rem;
    }

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

    .hero__logo {
        max-width: 250px;
    }

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

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

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

    .social-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero__actions {
        flex-direction: column;
        align-items: center;
    }

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

/* --------------------------------------------------------------------------
   Animations
   -------------------------------------------------------------------------- */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

.pulse {
    animation: pulse 2s ease-in-out infinite;
}