:root {
    --bg-color: #0c153b;
    --card-bg: #17235b;
    --card-hover-bg: #1d2a6a;
    --text-primary: #ffffff;
    --text-secondary: #949bb2;
    --accent-color: #ffb300;
    --accent-hover: #ffc133;
    
    /* Icon Colors */
    --icon-orange: #ff7a00;
    --icon-green: #00c853;
    --icon-blue: #00b0ff;
    --icon-purple: #b388ff;
    --icon-pink: #ff4081;
    --icon-teal: #18ffff;
    
    /* Fonts */
    --font-heading: 'Clash Display', sans-serif;
    --font-body: 'Inter', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.5;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
}

/* Navbar */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px max(8%, calc((100vw - 1100px) / 2));
    background-color: rgba(12, 21, 59, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
}

.navbar.scrolled {
    padding: 15px max(8%, calc((100vw - 1100px) / 2));
    background-color: rgba(12, 21, 59, 0.95);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.nav-icon {
    color: var(--text-primary);
    font-size: 1.5rem;
    text-decoration: none;
    transition: color 0.3s ease;
}

.nav-icon:hover {
    color: var(--accent-color);
}

.nav-title {
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: 0.5px;
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.nav-title:hover {
    color: var(--accent-color);
}

.nav-lang {
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 80px max(8%, calc((100vw - 1100px) / 2)) 100px;
    min-height: calc(100vh - 80px);
}

.hero-content {
    max-width: 50%;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 30px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.badge .dot {
    width: 6px;
    height: 6px;
    background-color: var(--accent-color);
    border-radius: 50%;
}

.hero-title {
    font-size: 5rem;
    font-weight: 900;
    line-height: 1;
    margin-bottom: 10px;
    text-transform: capitalize;
    letter-spacing: -2px;
}

.text-highlight {
    color: var(--accent-color);
}

.hero-subtitle {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 30px;
}

.hero-description {
    font-size: 1.05rem;
    color: var(--text-primary);
    margin-bottom: 40px;
    max-width: 90%;
    line-height: 1.6;
}

.hero-action {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.btn-primary {
    background-color: var(--accent-color);
    color: #000;
    padding: 15px 32px;
    border-radius: 30px;
    font-weight: 700;
    font-size: 1rem;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: max-content;
    transition: transform 0.3s ease, background-color 0.3s ease;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-3px);
}

.action-note {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.action-note .line {
    width: 20px;
    height: 1px;
    background-color: var(--text-secondary);
}

.hero-image {
    max-width: 45%;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.student-img {
    max-width: 100%;
    height: auto;
    border-radius: 30px;
    /* Transparan arkaplan için gölge kaldırıldı */
    position: relative;
    z-index: 2;
}

/* Hero Animasyonlu Halkalar */
.animated-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    z-index: 1;
}

.ring-1 {
    width: 320px;
    height: 320px;
    border: 1px dashed rgba(255, 179, 0, 0.4);
    animation: orbit 25s linear infinite;
}

.ring-2 {
    width: 420px;
    height: 420px;
    border: 1px solid rgba(0, 176, 255, 0.2);
    animation: orbit-reverse 35s linear infinite;
}

.ring-3 {
    width: 520px;
    height: 520px;
    border: 2px dotted rgba(255, 255, 255, 0.1);
    animation: orbit 45s linear infinite;
}

.orbit-dot {
    position: absolute;
    border-radius: 50%;
    box-shadow: 0 0 10px currentColor;
}

.dot-yellow {
    width: 12px;
    height: 12px;
    background-color: var(--accent-color);
    color: var(--accent-color);
    top: 10%;
    left: 10%;
}

.dot-blue {
    width: 16px;
    height: 16px;
    background-color: var(--icon-blue);
    color: var(--icon-blue);
    bottom: 15%;
    right: 15%;
}

@keyframes orbit {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

@keyframes orbit-reverse {
    0% { transform: translate(-50%, -50%) rotate(360deg); }
    100% { transform: translate(-50%, -50%) rotate(0deg); }
}

/* Steps Section */
.steps-section {
    padding: 80px max(8%, calc((100vw - 1100px) / 2)) 120px;
    scroll-margin-top: 100px;
}

.section-header {
    margin-bottom: 50px;
}

.section-subtitle {
    display: flex;
    align-items: center;
    gap: 15px;
    color: var(--accent-color);
    font-weight: 700;
    font-size: 0.85rem;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-bottom: 15px;
}

.section-subtitle .line-right {
    width: 40px;
    height: 1px;
    background-color: rgba(255, 255, 255, 0.2);
}

.section-title {
    font-size: 3rem;
    font-weight: 900;
    line-height: 1.1;
    max-width: 600px;
    letter-spacing: -1px;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.card {
    background-color: var(--card-bg);
    border-radius: 24px;
    padding: 40px 30px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    transition: transform 0.4s ease, background-color 0.4s ease;
    border: 1px solid rgba(255, 255, 255, 0.03);
}

.card:hover {
    transform: translateY(-10px);
    background-color: var(--card-hover-bg);
}

.card-icon {
    width: 50px;
    height: 50px;
    border-radius: 14px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    margin-bottom: 25px;
    background-color: rgba(255, 255, 255, 0.05);
}

.icon-orange { color: var(--icon-orange); }
.icon-green { color: var(--icon-green); }
.icon-blue { color: var(--icon-blue); }
.icon-purple { color: var(--icon-purple); }
.icon-pink { color: var(--icon-pink); }
.icon-teal { color: var(--icon-teal); }

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 15px;
}

.card-text {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 30px;
    flex-grow: 1; /* Pushes the link to bottom if texts have different lengths */
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.card:hover .card-link {
    color: var(--accent-color);
}

.link-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background-color: var(--accent-color);
    color: #000;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 0.8rem;
    transition: transform 0.3s ease;
}

.card:hover .link-icon {
    transform: translateX(5px);
}


/* Responsive Design */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 4rem;
    }
    
    .section-title {
        font-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    .navbar, .navbar.scrolled {
        padding: 15px 5%;
    }
    
    .hero {
        flex-direction: column;
        text-align: center;
        padding: 40px 5% 60px;
        gap: 50px;
    }
    
    .hero-content, .hero-image {
        max-width: 100%;
    }
    
    .badge {
        margin: 0 auto 20px;
    }
    
    .hero-action {
        align-items: center;
    }
    
    .steps-section {
        padding: 60px 5%;
        scroll-margin-top: 80px;
    }
    
    .section-header {
        text-align: center;
    }
    
    .section-subtitle {
        justify-content: center;
    }
    
    .section-subtitle .line-right {
        display: none;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 1.8rem;
        margin: 0 auto;
    }

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

    .ring-1 { width: 220px; height: 220px; }
    .ring-2 { width: 300px; height: 300px; }
    .ring-3 { width: 380px; height: 380px; }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }

    .card {
        padding: 30px 20px;
    }

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

/* Footer Section */
.footer {
    background-color: var(--bg-color);
    padding: 80px max(8%, calc((100vw - 1100px) / 2)) 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.footer-cta-section {
    text-align: center;
    margin-bottom: 80px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.footer-subtitle {
    display: flex;
    align-items: center;
    gap: 15px;
    color: var(--accent-color);
    font-weight: 700;
    font-size: 0.85rem;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.footer-subtitle .line-right {
    width: 60px;
    height: 1px;
    background-color: rgba(255, 255, 255, 0.15);
}

.footer-title {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 25px;
    letter-spacing: -1px;
}

.footer-desc {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.6;
}

.btn-footer {
    margin: 0 auto;
}

.footer-bottom {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-copyright {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer-address {
    font-size: 0.9rem;
    opacity: 0.7;
    margin-top: 5px;
    display: inline-block;
}

/* Continue Indicator */
.continue-indicator {
    width: 2px;
    height: 60px;
    border-left: 2px dashed rgba(255, 255, 255, 0.15);
    margin: 0 auto;
    position: relative;
    z-index: 10;
}

.footer-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 700;
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: var(--accent-color);
}

/* Responsive Footer */
@media (max-width: 768px) {
    .footer-title {
        font-size: 2.5rem;
    }
    .footer-bottom {
        flex-direction: column;
        align-items: center;
        gap: 20px;
        text-align: center;
    }
}

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

/* App Promo Section */
.app-promo {
    background-color: var(--bg-color);
    padding: 120px 0; /* Alttan ve üstten boşluğu artırdık */
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.app-promo-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    gap: 40px;
}

.app-promo-content {
    flex: 1 1 50%;
    color: var(--text-primary);
    text-align: left;
}

.app-promo-content h2 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
    color: var(--text-primary);
}

.app-promo-content p {
    font-size: 1.3rem;
    margin-bottom: 30px;
    font-weight: 600;
    color: var(--text-secondary);
}

.app-promo-badges {
    display: flex;
    gap: 15px;
}

.app-promo-badges img {
    height: 48px;
    border-radius: 8px;
}

.app-promo-image {
    flex: 1 1 50%;
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.app-promo-image img {
    max-width: 100%;
    height: auto;
    max-height: 600px;
    object-fit: contain;
}

@media (max-width: 768px) {
    .app-promo-container {
        flex-direction: column-reverse;
        text-align: center;
    }
    .app-promo-content {
        text-align: center;
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    .app-promo-image {
        justify-content: center;
        margin-bottom: 40px;
    }
    .app-promo-badges {
        justify-content: center;
        flex-wrap: wrap;
    }
}