/* ============================================
   RESET & BASE STYLES
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2196F3;
    --primary-dark: #1976D2;
    --primary-light: #64B5F6;
    --secondary-color: #25D366;
    --text-dark: #1a1a1a;
    --text-light: #666666;
    --text-lighter: #999999;
    --bg-white: #ffffff;
    --bg-light: #f8f9fa;
    --bg-gradient-start: #667eea;
    --bg-gradient-end: #764ba2;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --border-radius: 20px;
    --border-radius-sm: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================================
   NAVIGATION
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-dark);
    text-decoration: none;
}

.logo-icon {
    width: 40px;
    height: 40px;
    object-fit: contain;
    display: block;
}

.logo-text {
    background: linear-gradient(135deg, var(--primary-color), var(--bg-gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
    align-items: center;
}

.nav-link {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    transition: var(--transition);
    position: relative;
    padding: 8px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--bg-gradient-end));
    transition: var(--transition);
    border-radius: 2px;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.nav-button {
    background: linear-gradient(135deg, var(--primary-color), var(--bg-gradient-end));
    color: white !important;
    padding: 10px 20px !important;
    border-radius: var(--border-radius-sm);
    margin-left: 16px;
    box-shadow: var(--shadow-sm);
}

.nav-button::after {
    display: none;
}

.nav-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: white !important;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    border-radius: 3px;
    transition: var(--transition);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 0 80px;
    overflow: hidden;
    z-index: 1;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    z-index: -1;
    animation: gradientWave 15s ease infinite;
    background-size: 300% 300%;
}

@keyframes gradientWave {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.3) 0%, rgba(99, 102, 241, 0.2) 50%, rgba(168, 85, 247, 0.3) 100%);
    animation: gradientWave 20s ease infinite reverse;
    background-size: 300% 300%;
}

.gradient-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.15) 0%, transparent 60%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 60%),
        radial-gradient(circle at 50% 20%, rgba(147, 197, 253, 0.2) 0%, transparent 50%);
    animation: overlayPulse 20s ease-in-out infinite;
}

@keyframes overlayPulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.05);
    }
}

.hero-content {
    text-align: center;
    color: white;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(15px);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 32px;
    border: 1px solid rgba(255, 255, 255, 0.4);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.hero-badge:hover {
    background: rgba(255, 255, 255, 0.35);
    transform: translateY(-2px);
}

.hero-title {
    font-size: clamp(42px, 8vw, 72px);
    font-weight: 400;
    line-height: 1.2;
    margin-bottom: 24px;
    letter-spacing: 0.5px;
    font-family: 'Oooh Baby', cursive;
    font-style: normal;
    -webkit-text-stroke: 1px rgba(255, 255, 255, 0.4);
    text-shadow: 
        0 2px 4px rgba(0, 0, 0, 0.15),
        0 0 0 rgba(255, 255, 255, 0.1);
    filter: drop-shadow(0 2px 2px rgba(0, 0, 0, 0.1));
}

.gradient-text {
    background: linear-gradient(135deg, #a5b4fc, #e0e7ff, #c7d2fe);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% 200%;
    animation: textGradient 8s ease infinite;
}

@keyframes textGradient {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

.hero-description {
    font-size: 20px;
    line-height: 1.8;
    margin-bottom: 40px;
    opacity: 0.95;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 80px;
    flex-wrap: wrap;
}

.btn {
    padding: 16px 32px;
    border-radius: var(--border-radius-sm);
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    display: inline-block;
    font-family: inherit;
}

.btn-primary {
    background: white;
    color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
}

.hero-stats {
    display: flex;
    gap: 60px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 60px;
}

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

.stat-number {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 8px;
    background: linear-gradient(135deg, #c7d2fe, #e0e7ff, #ddd6fe);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% 200%;
    animation: statGradient 6s ease infinite;
}

@keyframes statGradient {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

.stat-label {
    font-size: 14px;
    opacity: 0.9;
    font-weight: 500;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
}

.mouse {
    width: 24px;
    height: 40px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 20px;
    position: relative;
}

.mouse::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 2px;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0%, 100% { opacity: 1; transform: translateX(-50%) translateY(0); }
    50% { opacity: 0.5; transform: translateX(-50%) translateY(10px); }
}

/* ============================================
   FEATURES SECTION
   ============================================ */
.features {
    position: relative;
    padding: 120px 0;
    background: var(--bg-light);
    z-index: 2;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(33, 150, 243, 0.1);
    color: var(--primary-color);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 20px;
}

.section-title {
    font-size: clamp(36px, 6vw, 48px);
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-dark);
    letter-spacing: -1px;
}

.section-description {
    font-size: 18px;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.8;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
    margin-top: 60px;
}

.feature-card {
    background: white;
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 24px;
    display: block;
}

.feature-title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.feature-description {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.8;
}

/* ============================================
   DOWNLOAD SECTION
   ============================================ */
.download {
    position: relative;
    padding: 120px 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
    z-index: 2;
}

.download-buttons {
    display: flex;
    gap: 24px;
    justify-content: center;
    margin-top: 60px;
    flex-wrap: wrap;
}

.download-button {
    display: flex;
    align-items: center;
    gap: 20px;
    background: white;
    padding: 24px 40px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    text-decoration: none;
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.05);
    min-width: 280px;
    max-width: 320px;
}

.download-button:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.download-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border-radius: var(--border-radius-sm);
    flex-shrink: 0;
}

.store-icon {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.download-content {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.download-label {
    font-size: 14px;
    color: var(--text-light);
    font-weight: 500;
}

.download-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
}

/* ============================================
   PRICING SECTION
   ============================================ */
.pricing {
    position: relative;
    padding: 120px 0;
    background: white;
    z-index: 2;
}

.pricing-tabs {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 60px;
}

.pricing-tab {
    padding: 12px 32px;
    background: var(--bg-light);
    border: 2px solid transparent;
    border-radius: var(--border-radius-sm);
    font-size: 16px;
    font-weight: 600;
    color: var(--text-light);
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.pricing-tab:hover {
    background: rgba(33, 150, 243, 0.1);
    color: var(--primary-color);
}

.pricing-tab.active {
    background: linear-gradient(135deg, var(--primary-color), var(--bg-gradient-end));
    color: white;
    border-color: transparent;
}

.pricing-content {
    margin-bottom: 40px;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
}

#student-packages {
    justify-items: center;
}

#student-packages .pricing-card {
    max-width: 320px;
}

.pricing-card {
    background: white;
    border: 2px solid rgba(0, 0, 0, 0.05);
    border-radius: var(--border-radius);
    padding: 28px 24px;
    transition: var(--transition);
    position: relative;
    box-shadow: var(--shadow-sm);
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.pricing-card.featured {
    border-color: var(--primary-color);
    border-width: 2px;
    box-shadow: var(--shadow-md);
}

.pricing-card.enterprise {
    border-color: var(--bg-gradient-end);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    right: 24px;
    background: linear-gradient(135deg, var(--primary-color), var(--bg-gradient-end));
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.pricing-header {
    text-align: center;
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.pricing-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 16px;
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
    margin-bottom: 8px;
}

.price-amount {
    font-size: 36px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--bg-gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.price-currency {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-light);
}

.pricing-period {
    font-size: 14px;
    color: var(--text-light);
    font-weight: 500;
}

.pricing-features {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.pricing-features li {
    font-size: 14px;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: 8px;
}

.pricing-note {
    max-width: 800px;
    margin: 60px auto 0;
    padding: 32px;
    background: var(--bg-light);
    border-radius: var(--border-radius);
    text-align: center;
}

.pricing-note p {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 12px;
}

.pricing-note p:last-child {
    margin-bottom: 0;
}

.pricing-note strong {
    color: var(--text-dark);
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about {
    position: relative;
    padding: 120px 0;
    background: white;
    z-index: 2;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-text {
    max-width: 600px;
}

.about-description {
    font-size: 18px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 24px;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 40px;
}

.about-feature-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 16px;
    color: var(--text-dark);
    font-weight: 500;
}

.check-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--primary-color), var(--bg-gradient-end));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 18px;
    flex-shrink: 0;
}

.about-visual {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    width: 100%;
}

.visual-card {
    text-decoration: none;
    color: inherit;
    cursor: pointer;
    background: white;
    padding: 40px 32px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.05);
    text-align: center;
    min-height: 200px;
}

.visual-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.card-icon {
    font-size: 56px;
    margin-bottom: 8px;
}

.card-text {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-dark);
    text-align: center;
    line-height: 1.4;
}

/* ============================================
   TESTIMONIALS SECTION
   ============================================ */
.testimonials {
    position: relative;
    padding: 120px 0;
    background: white;
    z-index: 2;
    overflow: hidden;
}

.testimonials-container {
    position: relative;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: flex-start;
    gap: 0;
    margin-top: 60px;
    min-height: 500px;
    padding: 40px 20px;
}

.testimonial-card {
    position: relative;
    width: 240px; /* %50 artırıldı: 160 * 1.5 = 240px */
    min-height: 135px; /* Minimum yükseklik: 240 * 9/16 = 135px */
    height: auto; /* İçeriğe göre yükseklik */
    background: white;
    border-radius: 24px;
    padding: 20px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    z-index: 1;
    display: flex;
    flex-direction: column;
    transform: rotate(-3deg);
    margin-left: -60px;
    margin-top: -30px;
}

.testimonial-card:first-child {
    margin-left: 0;
    margin-top: 0;
}

.testimonial-card:nth-child(even) {
    transform: rotate(3deg);
    margin-top: -30px;
}

.testimonial-card:nth-child(3n) {
    transform: rotate(-2deg);
    margin-top: -25px;
}

.testimonial-card:nth-child(4n) {
    transform: rotate(2.5deg);
    margin-top: -35px;
}

.testimonial-card:nth-child(5n) {
    transform: rotate(-1.5deg);
    margin-top: -15px;
}

.testimonial-card:nth-child(6n) {
    transform: rotate(1.5deg);
    margin-top: -28px;
}

.testimonial-card:nth-child(7n) {
    transform: rotate(-2.5deg);
    margin-top: -22px;
}

.testimonial-card:nth-child(8n) {
    transform: rotate(2deg);
    margin-top: -32px;
}

.testimonial-card:nth-child(9n) {
    transform: rotate(-1deg);
    margin-top: -18px;
}

.testimonial-card:nth-child(10n) {
    transform: rotate(1.8deg);
    margin-top: -26px;
}

.testimonial-card:nth-child(11n) {
    transform: rotate(-2.2deg);
    margin-top: -24px;
}

.testimonial-card:nth-child(12n) {
    transform: rotate(2.8deg);
    margin-top: -30px;
}

.testimonial-card:hover {
    transform: scale(1.05) rotate(0deg) !important;
    z-index: 10;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.2);
}

.testimonial-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.testimonial-icon-img {
    width: 32px;
    height: 32px;
    object-fit: contain;
    flex-shrink: 0;
}

.testimonial-author {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-dark);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.testimonial-text {
    font-size: 12px;
    line-height: 1.5;
    color: var(--text-light);
    flex: 1;
    margin: 0;
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact {
    position: relative;
    padding: 120px 0;
    background: var(--bg-light);
    z-index: 2;
}

.contact-content {
    margin-top: 60px;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-card {
    background: white;
    border-radius: 20px;
    padding: 32px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.contact-card-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary-color), var(--bg-gradient-end));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    margin-bottom: 8px;
}

.contact-card-title {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-dark);
    margin: 0;
}

.contact-card-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.contact-card-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--bg-light);
    border-radius: 12px;
    text-decoration: none;
    color: var(--text-dark);
    font-size: 15px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.contact-card-link:hover {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateX(4px);
}

.contact-card-link svg {
    opacity: 0.6;
    transition: opacity 0.3s ease;
}

.contact-card-link:hover svg {
    opacity: 1;
}

.social-card {
    grid-column: span 1;
}

.social-icons-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.social-icon-card {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    background: var(--bg-light);
    border-radius: 12px;
    color: var(--text-dark);
    text-decoration: none;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.social-icon-card:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--bg-gradient-end));
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

@media (min-width: 768px) {
    .contact-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .social-card {
        grid-column: span 1;
    }
    
    .social-icons-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.contact-form-container {
    background: white;
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-dark);
}

.form-group input,
.form-group textarea {
    padding: 16px;
    border: 2px solid rgba(0, 0, 0, 0.1);
    border-radius: var(--border-radius-sm);
    font-size: 16px;
    font-family: inherit;
    transition: var(--transition);
    background: var(--bg-light);
}

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

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 80px 0 40px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 80px;
    margin-bottom: 60px;
}

.footer-brand .logo {
    color: white;
    margin-bottom: 20px;
}

.footer-description {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    max-width: 400px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-column ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-column a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 15px;
    transition: var(--transition);
}

.footer-column a:hover {
    color: white;
    padding-left: 4px;
}

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.footer-bottom .btn {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.footer-bottom .btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 968px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        flex-direction: column;
        background: white;
        width: 100%;
        padding: 40px 24px;
        box-shadow: var(--shadow-lg);
        transition: var(--transition);
        gap: 24px;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .about-visual {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .contact-content {
        justify-content: center;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .footer-links {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-stats {
        gap: 40px;
    }

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

@media (max-width: 640px) {
    .hero {
        padding: 100px 0 60px;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .hero-stats {
        flex-direction: column;
        gap: 32px;
    }

    .section-title {
        font-size: 32px;
    }

    .features,
    .download,
    .pricing,
    .about,
    .testimonials,
    .contact {
        padding: 80px 0;
    }

    .testimonials-container {
        gap: 15px;
        padding: 20px 10px;
        min-height: auto;
    }

    .testimonial-card {
        width: 200px;
        min-height: 112px; /* Minimum yükseklik: 200 * 9/16 = 112.5px */
        height: auto; /* İçeriğe göre yükseklik */
        padding: 16px;
        margin-left: -40px !important;
        margin-top: -20px !important;
    }

    .testimonial-card:first-child {
        margin-left: 0 !important;
        margin-top: 0 !important;
    }

    .testimonial-card:hover {
        transform: scale(1.1) rotate(0deg) !important;
    }

    .testimonial-icon-img {
        width: 28px;
        height: 28px;
    }

    .testimonial-author {
        font-size: 13px;
    }

    .testimonial-text {
        font-size: 11px;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .pricing-tabs {
        flex-direction: column;
        gap: 12px;
    }

    .pricing-tab {
        width: 100%;
    }

    .download-button {
        min-width: 100%;
        max-width: 100%;
    }

    .contact-form-container {
        padding: 24px;
    }

    .about-features {
        grid-template-columns: 1fr;
    }

    .about-visual {
        grid-template-columns: 1fr;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .contact-card {
        padding: 24px;
    }

    .social-icons-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ============================================
   SMOOTH SCROLL ANIMATIONS
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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