:root {
    --bg-primary: #0a0e1a;
    --bg-secondary: #131830;
    --bg-tertiary: #1a2340;
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-tertiary: #06b6d4;
    --glow-primary: rgba(99, 102, 241, 0.4);
    --glow-secondary: rgba(139, 92, 246, 0.3);
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --success-color: #10b981;
    --border-color: rgba(99, 102, 241, 0.2);
    --glass-bg: rgba(19, 24, 48, 0.7);
    --steam-dark: #1b2838;
    --steam-blue: #67c1f5;
    --steam-light-blue: #acdbf5;
    --transition-speed: 0.3s;
    --transition-smooth: cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Inter', 'Segoe UI', sans-serif;
    line-height: 1.7;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(99, 102, 241, 0.15), transparent),
        radial-gradient(ellipse 60% 40% at 80% 50%, rgba(139, 92, 246, 0.1), transparent),
        radial-gradient(ellipse 50% 30% at 20% 80%, rgba(6, 182, 212, 0.08), transparent);
    pointer-events: none;
    z-index: -1;
}

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

ul {
    list-style: none;
}

/* ========== HEADER ========== */
header {
    background: rgba(10, 14, 26, 0.85);
    padding: 1rem 3rem;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    height: 44px;
    width: auto;
    filter: drop-shadow(0 0 12px var(--glow-primary));
    transition: all var(--transition-speed);
}

.logo-img:hover {
    filter: drop-shadow(0 0 20px var(--glow-primary));
    transform: scale(1.05);
}

.logo-text {
    font-size: 1.6rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 0.5px;
}

nav ul {
    display: flex;
    gap: 2.5rem;
}

nav a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding: 0.5rem 0;
}

nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    transition: width var(--transition-speed) var(--transition-smooth);
}

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

nav a:hover::after {
    width: 100%;
}

/* ========== HERO + BANNER COMBINED ========== */
.hero-banner {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 3rem;
    align-items: center;
    padding: 120px 4rem 4rem;
    position: relative;
    overflow: hidden;
}

.hero-banner::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 20%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, var(--glow-primary) 0%, transparent 70%);
    opacity: 0.4;
    animation: pulse 8s ease-in-out infinite;
    pointer-events: none;
}

@keyframes pulse {

    0%,
    100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.4;
    }

    50% {
        transform: translate(-50%, -50%) scale(1.1);
        opacity: 0.2;
    }
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-content h1 {
    font-size: clamp(2.2rem, 4vw, 3.5rem);
    margin-bottom: 1.5rem;
    line-height: 1.1;
    background: linear-gradient(135deg, #fff 0%, var(--accent-primary) 50%, var(--accent-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s var(--transition-smooth);
}

.hero-content p {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin-bottom: 2.5rem;
    animation: fadeInUp 1s var(--transition-smooth);
}

.cta-buttons {
    display: flex;
    gap: 1.5rem;
    animation: fadeInUp 1.2s var(--transition-smooth);
    flex-wrap: wrap;
}

.btn {
    padding: 1rem 2rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-speed) var(--transition-smooth);
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    border: none;
    position: relative;
    overflow: hidden;
}

.btn svg {
    width: 22px;
    height: 22px;
    flex-shrink: 0;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    color: #fff;
    box-shadow: 0 8px 32px var(--glow-primary), 0 4px 16px rgba(0, 0, 0, 0.3);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn-primary:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 48px var(--glow-primary), 0 8px 24px rgba(0, 0, 0, 0.4);
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-secondary {
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    border-color: var(--accent-primary);
    color: var(--text-primary);
    background: rgba(99, 102, 241, 0.1);
    transform: translateY(-4px);
}

/* ========== DEMO SHOWCASE ========== */
.demo-showcase {
    position: relative;
    z-index: 2;
    animation: fadeInRight 1s var(--transition-smooth);
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }

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

.demo-browser {
    background: linear-gradient(145deg, rgba(26, 35, 64, 0.95) 0%, rgba(19, 24, 48, 0.98) 100%);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    box-shadow:
        0 32px 64px rgba(0, 0, 0, 0.5),
        0 0 80px var(--glow-primary),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    overflow: hidden;
    transform: perspective(1000px) rotateY(-5deg) rotateX(2deg);
    transition: transform 0.5s var(--transition-smooth);
}

.demo-browser:hover {
    transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.browser-header {
    background: rgba(0, 0, 0, 0.4);
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.browser-dots {
    display: flex;
    gap: 8px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red {
    background: #ff5f56;
}

.dot.yellow {
    background: #ffbd2e;
}

.dot.green {
    background: #27c93f;
}

.browser-url {
    flex: 1;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 8px 14px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.browser-content {
    padding: 20px;
    background: var(--steam-dark);
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* ========== DEMO GAME CARDS ========== */
.demo-game-card {
    background: linear-gradient(135deg, rgba(42, 71, 94, 0.5) 0%, rgba(27, 40, 56, 0.8) 100%);
    border-radius: 8px;
    overflow: hidden;
    transition: all var(--transition-speed);
}

.demo-game-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.game-banner {
    background: linear-gradient(135deg, #2a475e 0%, #1b2838 100%);
    padding: 16px 20px;
    border-bottom: 1px solid rgba(103, 193, 245, 0.2);
}

.game-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 4px;
}

.game-publisher {
    font-size: 0.75rem;
    color: var(--steam-light-blue);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.game-subtitle {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.game-price-section {
    padding: 16px 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* ========== BADGE ROW - Badge ve Calculation Details yan yana ========== */
.badge-row {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    flex-wrap: wrap;
}

/* ========== STEAMBITE BADGE DEMO ========== */
.steambite-badge-demo {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(103, 193, 245, 0.3);
    border-radius: 6px;
    padding: 8px 14px;
    width: fit-content;
    animation: badgePulse 3s ease-in-out infinite;
    flex-shrink: 0;
}

@keyframes badgePulse {

    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(103, 193, 245, 0.4);
        border-color: rgba(103, 193, 245, 0.3);
    }

    50% {
        box-shadow: 0 0 20px 4px rgba(103, 193, 245, 0.3);
        border-color: rgba(103, 193, 245, 0.6);
    }
}

.badge-icon {
    width: 24px;
    height: 24px;
    object-fit: contain;
}

.badge-quantity {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--steam-blue);
}

.badge-product {
    font-size: 0.9rem;
    color: var(--steam-light-blue);
}

/* ========== CALCULATION DETAILS - Extension'daki gibi ========== */
.calculation-details {
    background: #171a21;
    border: 1px solid #3d4450;
    border-radius: 6px;
    padding: 12px 14px;
    min-width: 200px;
    font-family: 'Motiva Sans', Arial, sans-serif;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
    animation: tooltipFade 2s ease-in-out infinite alternate;
}

@keyframes tooltipFade {
    0% {
        opacity: 0.9;
    }

    100% {
        opacity: 1;
    }
}

.calc-header {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid #3d4450;
    font-weight: 600;
    color: #ffffff;
    text-transform: uppercase;
    font-size: 0.65rem;
    letter-spacing: 0.5px;
}

.calc-header span:first-child {
    font-size: 0.7rem;
}

.calc-row {
    display: flex;
    justify-content: space-between;
    padding: 3px 0;
    font-size: 0.7rem;
    color: #c6d4df;
    font-family: monospace;
}

.calc-row span:first-child {
    color: #8f98a0;
}

.calc-divider {
    height: 1px;
    background: #3d4450;
    margin: 8px 0;
}

.calc-row.result {
    font-weight: 700;
    color: #ffffff;
    font-size: 0.75rem;
}

.calc-row.result span:first-child {
    color: #ffffff;
}

/* Price Row */
.price-row {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.discount-tag {
    background: #4c6b22;
    color: #a4d007;
    padding: 4px 8px;
    border-radius: 4px;
    font-weight: 700;
    font-size: 0.9rem;
}

.price-original {
    color: var(--text-muted);
    text-decoration: line-through;
    font-size: 0.85rem;
}

.price-final {
    color: #a4d007;
    font-weight: 700;
    font-size: 1rem;
}

.add-cart-btn {
    background: linear-gradient(135deg, #75b022 0%, #588a1b 100%);
    color: #d2efa9;
    border: none;
    padding: 8px 20px;
    border-radius: 4px;
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    margin-left: auto;
    transition: all var(--transition-speed);
}

.add-cart-btn:hover {
    background: linear-gradient(135deg, #8bc53f 0%, #75b022 100%);
}

/* ========== FEATURES SECTION ========== */
.features {
    padding: 6rem 2rem;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    position: relative;
}

.section-title {
    text-align: center;
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-tertiary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 4rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: var(--glass-bg);
    padding: 2.5rem;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    transition: all var(--transition-speed) var(--transition-smooth);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--transition-speed);
}

.feature-card:hover {
    transform: translateY(-12px);
    border-color: var(--accent-primary);
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.3), 0 0 40px var(--glow-primary);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    width: 90px;
    height: 90px;
    margin-bottom: 1.5rem;
    filter: drop-shadow(0 0 20px var(--glow-primary));
    transition: all var(--transition-speed);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-tertiary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ========== SECURITY SECTION ========== */
.security {
    padding: 6rem 2rem;
    background: var(--bg-primary);
    text-align: center;
    position: relative;
}

.security-content {
    max-width: 900px;
    margin: 0 auto;
}

.security .section-title {
    margin-bottom: 1.5rem;
}

.security p {
    color: var(--text-secondary);
    font-size: 1.15rem;
    line-height: 1.8;
    max-width: 700px;
    margin: 0 auto 3rem;
}

.badges {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.badge {
    background: linear-gradient(135deg, var(--glass-bg) 0%, rgba(99, 102, 241, 0.1) 100%);
    padding: 1.2rem 2.5rem;
    border-radius: 100px;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-weight: 600;
    font-size: 1rem;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    transition: all var(--transition-speed) var(--transition-smooth);
}

.badge:hover {
    transform: translateY(-4px);
    border-color: var(--accent-primary);
    box-shadow: 0 12px 32px var(--glow-primary);
}

.badge span:first-child {
    font-size: 1.5rem;
}

.badge span:last-child {
    background: linear-gradient(135deg, var(--success-color) 0%, var(--accent-tertiary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ========== FOOTER ========== */
footer {
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    border-top: 1px solid var(--border-color);
    padding: 3rem 2rem;
    text-align: center;
    color: var(--text-muted);
}

footer p {
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.social-links a {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: all var(--transition-speed);
}

.social-links a:hover {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    transform: translateY(-4px);
}

/* ========== LANGUAGE SELECTOR ========== */
.language-selector {
    position: relative;
    margin-right: 1.5rem;
}

.lang-btn {
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.6rem 1.2rem;
    border-radius: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.9rem;
    transition: all var(--transition-speed);
    backdrop-filter: blur(10px);
}

.lang-btn:hover {
    background: rgba(99, 102, 241, 0.15);
    border-color: var(--accent-primary);
}

.lang-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 0.75rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 0.5rem 0;
    min-width: 160px;
    display: none;
    flex-direction: column;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
    z-index: 1001;
    backdrop-filter: blur(20px);
}

.lang-dropdown.show {
    display: flex;
    animation: dropIn 0.25s var(--transition-smooth);
}

@keyframes dropIn {
    from {
        opacity: 0;
        transform: translateY(-10px) scale(0.95);
    }

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

.lang-dropdown button {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.9rem 1.2rem;
    text-align: left;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.lang-dropdown button:hover {
    background: rgba(99, 102, 241, 0.15);
    color: var(--text-primary);
}

.lang-dropdown button.active {
    color: var(--accent-primary);
    font-weight: 600;
}

/* ========== ANIMATIONS ========== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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

/* Scroll reveal */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s var(--transition-smooth);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1100px) {
    .hero-banner {
        grid-template-columns: 1fr;
        text-align: center;
        padding: 120px 2rem 4rem;
        gap: 3rem;
    }

    .hero-content {
        order: 1;
    }

    .hero-content p {
        margin-left: auto;
        margin-right: auto;
    }

    .cta-buttons {
        justify-content: center;
    }

    .demo-showcase {
        order: 2;
        max-width: 600px;
        margin: 0 auto;
    }

    .demo-browser {
        transform: none;
    }

    .demo-browser:hover {
        transform: translateY(-8px);
    }

    .badge-row {
        flex-direction: column;
        align-items: flex-start;
    }

    .calculation-details {
        margin-left: 0;
    }
}

@media (max-width: 768px) {
    header {
        padding: 1rem 1.5rem;
    }

    .hero-banner {
        padding: 100px 1.5rem 3rem;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    nav {
        display: none;
    }

    .language-selector {
        margin-right: 0;
    }

    .cta-buttons {
        flex-direction: column;
        width: 100%;
        max-width: 320px;
        margin: 0 auto;
    }

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

    .badges {
        gap: 1rem;
    }

    .badge {
        padding: 1rem 1.5rem;
        font-size: 0.9rem;
    }

    .game-banner,
    .game-price-section {
        padding: 12px 16px;
    }

    .steambite-badge-demo {
        padding: 6px 10px;
        gap: 6px;
    }

    .badge-icon {
        width: 20px;
        height: 20px;
    }

    .badge-quantity {
        font-size: 1rem;
    }

    .badge-product {
        font-size: 0.8rem;
    }

    .calculation-details {
        min-width: 180px;
        padding: 10px 12px;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 1.7rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .feature-card {
        padding: 2rem 1.5rem;
    }

    .price-row {
        gap: 8px;
    }

    .add-cart-btn {
        padding: 6px 12px;
        font-size: 0.75rem;
    }
}