:root {
    --bg-color: #f7f7f7;
    --accent-color: #000000;
    --secondary-color: #ffffff;
    --text-color: #0a0a0a;
    --muted-color: #666666;
    --glass-bg: rgba(0, 0, 0, 0.03);
    --glass-border: rgba(0, 0, 0, 0.08);
    --btn-primary-bg: #000000;
    --btn-primary-text: #ffffff;
    --logo-filter: drop-shadow(0 4px 10px rgba(0, 0, 0, 0.05));
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body.dark-mode {
    --bg-color: #050505;
    --accent-color: #ffffff;
    --secondary-color: #111111;
    --text-color: #ffffff;
    --muted-color: #888888;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.1);
    --btn-primary-bg: #ffffff;
    --btn-primary-text: #050505;
    --logo-filter: drop-shadow(0 0 20px rgba(255, 255, 255, 0.1));
}

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

body {
    font-family: 'Montserrat', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow-x: hidden;
    overflow-y: auto;
    position: relative;
    transition: background-color 0.5s ease, color 0.5s ease;
}

/* Particles */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: var(--text-color);
    border-radius: 50%;
    animation: moveParticle 10s infinite linear;
}

@keyframes moveParticle {
    0% { transform: translateY(0); opacity: 0; }
    50% { opacity: 0.5; }
    100% { transform: translateY(-100vh); opacity: 0; }
}

/* Background Glow */
.glow-sphere {
    position: fixed;
    border-radius: 50%;
    filter: blur(80px);
    z-index: 0;
    pointer-events: none;
    opacity: 0.18; /* Increased from 0.1 */
    background: radial-gradient(circle, rgba(0, 0, 0, 0.08) 0%, transparent 70%);
}

body.dark-mode .glow-sphere {
    opacity: 0.55; /* Increased from 0.4 */
    background: radial-gradient(circle, rgba(255, 255, 255, 0.12) 0%, transparent 70%);
}

.sphere-1 { width: 450px; height: 450px; top: -100px; left: -100px; animation: float 15s infinite alternate ease-in-out; }
.sphere-2 { width: 550px; height: 550px; bottom: -150px; right: -150px; animation: float 20s infinite alternate-reverse ease-in-out; }

@keyframes float { 0% { transform: translate(0, 0); } 100% { transform: translate(30px, 50px); } }

.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
    background: radial-gradient(circle at center, transparent 0%, rgba(255,255,255,0.4) 100%);
}

body.dark-mode .overlay { background: radial-gradient(circle at center, transparent 0%, rgba(0,0,0,0.4) 100%); }

/* Header */
.main-header {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: flex-end;
    z-index: 100;
}

.header-controls { display: flex; align-items: center; gap: 1.5rem; }
.theme-btn { cursor: pointer; font-size: 1.1rem; color: var(--muted-color); transition: var(--transition); }
.theme-btn:hover { color: var(--text-color); }
.lang-switcher { font-size: 0.75rem; font-weight: 700; color: var(--muted-color); }
.lang-switcher span.active { color: var(--text-color); }

/* Container */
.container {
    position: relative;
    z-index: 10;
    width: 100%;
    max-width: 600px;
    padding: 10rem 1.5rem 8rem; /* Daha fazla dikey boşluk */
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6rem;
    text-align: center;
}

/* Hero Section */
.hero-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3rem;
    animation: fadeIn 1.2s ease-out;
    width: 100%;
}

.logo {
    width: 450px;
    height: auto;
    max-width: 100%;
    filter: var(--logo-filter);
    transition: var(--transition);
}

.slogan-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    width: 100%;
    align-items: center;
}

.slogan {
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--text-color); /* Make it more prominent */
    letter-spacing: 1.5px;
    line-height: 1.8;
}

.slogan.small {
    font-size: 1.1rem;
    color: var(--muted-color);
    opacity: 0.9;
    letter-spacing: 1px;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Action Buttons */
.action-section {
    width: 100%;
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.btn {
    min-width: 200px;
    padding: 1.3rem 3rem;
    border: none;
    border-radius: 16px;
    font-family: 'Montserrat', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: -0.2px;
}

.btn-primary {
    background: var(--btn-primary-bg);
    color: var(--btn-primary-text);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
}

body.dark-mode .btn-primary {
    box-shadow: 0 10px 40px rgba(255, 255, 255, 0.1);
}

.btn-primary:hover {
    transform: translateY(-4px);
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.15);
}

.btn-secondary {
    background: var(--glass-bg);
    color: var(--text-color);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(12px);
}

.btn-secondary:hover {
    background: rgba(0, 0, 0, 0.05);
    border-color: rgba(0, 0, 0, 0.4);
    transform: translateY(-4px);
}

body.dark-mode .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Glass Card Global */
.glass-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    border-radius: 24px;
    transition: var(--transition);
}

/* Features */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; width: 100%; }
.feature-card { padding: 2.5rem 1.5rem; text-align: center; }
.feature-card i { font-size: 2rem; margin-bottom: 0.5rem; color: var(--text-color); }
.feature-card h3 { font-size: 0.9rem; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; }
.feature-card p { font-size: 0.7rem; color: var(--muted-color); margin-top: 0.5rem; }

/* Footer */
.footer-section { 
    width: 100%; 
    display: flex; 
    flex-direction: column; 
    align-items: center; 
    gap: 2rem;
    margin-top: 2rem;
}

.social-section {
    display: flex;
    gap: 2.5rem;
}

.social-btn {
    color: var(--muted-color);
    font-size: 1.6rem;
    transition: var(--transition);
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
}

.social-btn:hover {
    color: var(--text-color);
    transform: translateY(-5px);
    background: var(--glass-border);
    border-color: var(--muted-color);
}

.copyright { font-size: 0.75rem; color: var(--muted-color); opacity: 0.8; font-weight: 500; }
.branding { font-size: 0.75rem; color: var(--muted-color); opacity: 0.6; display: flex; align-items: center; gap: 5px; }
.branding strong { color: var(--text-color); letter-spacing: 1px; }

/* Live Support Icon */
.live-support {
    position: fixed;
    bottom: 35px;
    right: 35px;
    width: 65px;
    height: 65px;
    background: var(--text-color);
    color: var(--bg-color);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.8rem;
    z-index: 1000;
    box-shadow: 0 15px 45px rgba(0,0,0,0.2);
    cursor: pointer;
    animation: pulse 2.5s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); box-shadow: 0 15px 45px rgba(0,0,0,0.1); }
    50% { transform: scale(1.1); box-shadow: 0 20px 60px rgba(0,0,0,0.25); }
    100% { transform: scale(1); box-shadow: 0 15px 45px rgba(0,0,0,0.1); }
}

/* Cookie Banner */
.cookie-banner {
    position: fixed;
    bottom: -100px;
    left: 35px;
    max-width: 400px;
    padding: 1.2rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    z-index: 2000;
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
}

.cookie-banner.visible {
    bottom: 35px;
    opacity: 1;
}

.cookie-banner p {
    font-size: 0.85rem;
    line-height: 1.6;
    color: var(--text-color);
}

.cookie-banner p a {
    color: var(--muted-color);
    text-decoration: underline;
}

.btn-cookie {
    background: var(--text-color);
    color: var(--bg-color);
    border: none;
    padding: 0.6rem 1.2rem;
    border-radius: 10px;
    font-size: 0.8rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    align-self: flex-end;
}

.btn-cookie:hover {
    transform: translateY(-2px);
    opacity: 0.9;
}

/* Mobile */
@media (max-width: 480px) {
    .container { padding: 8rem 1.5rem; gap: 5rem; }
    .logo { width: 320px; }
    .slogan { font-size: 1.2rem; }
    .action-section { flex-direction: column; align-items: center; gap: 1.5rem; }
    .btn { width: 100%; min-width: unset; }
    .features { grid-template-columns: 1fr; gap: 15px; }
    .feature-card { flex-direction: row; justify-content: flex-start; padding: 1.5rem; }
    .feature-card i { font-size: 1.5rem; margin-bottom: 0; width: 40px; }
    .feature-card h3 { margin-left: 15px; font-size: 1rem; }
    .feature-card p { display: none; }
    .social-section { gap: 1.5rem; }
    
    .cookie-banner {
        left: 15px;
        right: 15px;
        max-width: calc(100% - 30px);
        bottom: -150px;
    }
    
    .cookie-banner.visible {
        bottom: 15px;
    }
}