/* --- Google Fonts & Kurumsal Değişken Tanımlamaları --- */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

:root {
    --primary: #19c7d3;          /* Ana turkuaz */
    --primary-dark: #0fa7bb;
    --primary-soft: #6be6ee;
    --secondary: #4b1d95;        /* Ana mor */
    --secondary-dark: #281057;   /* Koyu mor */
    --secondary-soft: #7c3aed;
    --bg-light: #f6fdff;         /* Çok açık turkuaz zemin */
    --bg-soft: #f1ecff;          /* Çok açık mor zemin */
    --text-main: #42305f;
    --text-muted: #76698c;
    --white: #ffffff;
    --cyan: #22d3ee;
    --purple: #8b5cf6;
    --success: #10b981;
    --danger: #ef4444;

    /* Efektler ve Kavisler */
    --shadow-sm: 0 6px 18px rgba(75, 29, 149, 0.07);
    --shadow-md: 0 16px 30px rgba(75, 29, 149, 0.12);
    --shadow-lg: 0 24px 60px rgba(75, 29, 149, 0.16);
    --radius-md: 14px;
    --radius-lg: 24px;
}

/* --- Temel Sıfırlamalar (Reset) --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Plus Jakarta Sans', sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-light);
    background-image:
        radial-gradient(circle at 10% 18%, rgba(25, 199, 211, 0.12) 0%, transparent 24%),
        radial-gradient(circle at 92% 14%, rgba(139, 92, 246, 0.16) 0%, transparent 22%),
        radial-gradient(circle at 85% 82%, rgba(25, 199, 211, 0.10) 0%, transparent 20%);
    color: var(--text-main);
    overflow-x: hidden;
    padding-top: 80px; /* Navbar sabitliği için üst boşluk */
}

/* --- Genel Ortak Sınıflar --- */
.section-title {
    text-align: center;
    font-size: 2.5rem;
    color: var(--secondary);
    margin-bottom: 3.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    text-shadow: 0 6px 22px rgba(25, 199, 211, 0.10);
}

.highlight {
    color: var(--primary);
    background: linear-gradient(120deg, rgba(25, 199, 211, 0.18) 0%, rgba(25, 199, 211, 0) 100%);
    padding: 0 8px;
    border-radius: 8px;
}

/* --- Yenilenen Logo ve Navbar Alanı --- */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.9rem 5%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    transition: all 0.4s ease;
}

.logo {
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px; /* Logo görseli ile yazı arasındaki ideal boşluk */
    text-decoration: none;
}

.logo-image {
    height: 40px; /* Görsel boyutu yazı ile dengelendi */
    width: auto;
    display: block;
}

.logo-text {
    font-size: 1.45rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--secondary); /* Sitedeki koyu lacivert/siyah tonu */
    transition: color 0.3s ease;
    user-select: none;
}

/* Navbar üzerindeki linklere hover olunduğunda logonun renginin de hafifçe parlaması için */
.logo:hover .logo-text {
    color: var(--primary); /* Sitenin ana turkuaz rengine dönüşür */
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    list-style: none;
}

.nav-links a {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 38px;
    padding: 9px 14px;
    border-radius: 999px;
    text-decoration: none;
    color: var(--text-main);
    font-weight: 700;
    font-size: 0.92rem;
    border: 1px solid transparent;
    background: rgba(255, 255, 255, 0.34);
    box-shadow: inset 0 0 0 1px rgba(25, 199, 211, 0);
    transition:
        color 0.24s ease,
        background-color 0.24s ease,
        border-color 0.24s ease,
        box-shadow 0.24s ease,
        transform 0.24s ease;
}

.nav-links a::after {
    content: '';
    position: absolute;
    left: 16px;
    right: 16px;
    bottom: 6px;
    height: 2px;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--primary), var(--secondary-soft));
    opacity: 0;
    transform: scaleX(0.45);
    transform-origin: center;
    transition: opacity 0.24s ease, transform 0.24s ease;
}

.nav-links a:hover,
.nav-links a:focus-visible {
    color: var(--primary-dark);
    background: rgba(25, 199, 211, 0.08);
    border-color: rgba(25, 199, 211, 0.18);
    box-shadow: 0 8px 18px rgba(75, 29, 149, 0.07);
    transform: translateY(-1px);
    outline: none;
}

.nav-links a:hover::after,
.nav-links a:focus-visible::after {
    opacity: 1;
    transform: scaleX(1);
}

.nav-buttons {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.btn-login {
    text-decoration: none;
    color: var(--secondary);
    font-weight: 600;
    font-size: 0.95rem;
    transition: color 0.3s;
}

.btn-login:hover {
    color: var(--primary);
}

.btn-demo {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    padding: 12px 28px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 14px rgba(25, 199, 211, 0.35);
}

.btn-demo:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(25, 199, 211, 0.45);
}


.mobile-nav-actions {
    display: none;
}

.hamburger {
    display: none;
    font-size: 1.5rem;
    color: var(--secondary);
    cursor: pointer;
}

/* --- Hero (Giriş) Bölümü --- */
.hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: calc(74vh - 80px);
    padding: 0.9rem 5% 1.2rem;
    gap: 2.2rem;
    background:
        radial-gradient(circle at 82% 18%, rgba(25, 199, 211, 0.14) 0%, transparent 32%),
        radial-gradient(circle at 12% 82%, rgba(139, 92, 246, 0.12) 0%, transparent 30%),
        linear-gradient(180deg, rgba(255, 255, 255, 0.88) 0%, rgba(246, 253, 255, 0.98) 100%);
}

.hero-content {
    flex: 1.02;
}

.badge {
    display: inline-block;
    background: rgba(255,255,255,0.9);
    padding: 8px 18px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary);
    box-shadow: var(--shadow-sm);
    margin-bottom: 1.8rem;
    border: 1px solid rgba(25, 199, 211, 0.16);
}

.hero-content h1 {
    font-size: 3.55rem;
    line-height: 1.15;
    margin-bottom: 1.25rem;
    color: var(--secondary);
    font-weight: 800;
    letter-spacing: -1px;
}

.hero-content p {
    font-size: 1.15rem;
    color: var(--text-muted);
    margin-bottom: 2.2rem;
    line-height: 1.65;
}

.hero-actions {
    display: flex;
    gap: 1.2rem;
}

.btn-primary, .btn-outline {
    padding: 15px 35px;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    font-size: 1rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
    box-shadow: 0 5px 15px rgba(25, 199, 211, 0.30);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(25, 199, 211, 0.40);
}

.btn-outline {
    background: var(--white);
    color: var(--secondary);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(25, 199, 211, 0.16);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}

/* --- Hero Görsel Alanı --- */
.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    position: relative;
    min-height: 410px;
    isolation: isolate;
}

.hero-visual-glow {
    position: absolute;
    width: 82%;
    height: 76%;
    background:
        radial-gradient(circle, rgba(25, 199, 211, 0.22) 0%, rgba(25, 199, 211, 0.03) 54%, transparent 70%),
        radial-gradient(circle at 32% 70%, rgba(139, 92, 246, 0.18) 0%, transparent 48%);
    filter: blur(10px);
    top: 4%;
    right: 4%;
    z-index: 0;
}

.hero-grid-dot {
    position: absolute;
    width: 118px;
    height: 118px;
    background-image: radial-gradient(rgba(75, 29, 149, 0.22) 1.8px, transparent 1.8px);
    background-size: 16px 16px;
    opacity: 0.8;
    z-index: 0;
}

.hero-grid-dot.dot-left {
    left: 2%;
    bottom: 10%;
}

.hero-grid-dot.dot-right {
    right: -1%;
    top: 7%;
    background-image: radial-gradient(rgba(25, 199, 211, 0.30) 1.8px, transparent 1.8px);
}

.ai-robot-stage {
    width: min(100%, 700px);
    height: 410px;
    position: relative;
    z-index: 2;
}

.robot-dashboard-pack {
    position: absolute;
    left: 0;
    top: 18px;
    width: 82%;
    z-index: 1;
    transform: perspective(1200px) rotateY(-7deg) rotateX(2deg);
    transform-origin: center;
}

.robot-dashboard-pack::before,
.robot-dashboard-pack::after {
    content: '';
    position: absolute;
    right: 88px;
    width: 76px;
    height: 12px;
    border-radius: 999px;
    background: linear-gradient(90deg, rgba(75, 29, 149, 0.52), rgba(25, 199, 211, 0.62));
    box-shadow: 0 8px 18px rgba(75, 29, 149, 0.16);
    z-index: 4;
}

.robot-dashboard-pack::before {
    top: 44px;
    transform: rotate(20deg);
}

.robot-dashboard-pack::after {
    bottom: 44px;
    transform: rotate(-18deg);
}

.admin-dashboard-frame {
    width: 100%;
    max-width: 610px;
    aspect-ratio: 16 / 10;
    border-radius: calc(var(--radius-lg) + 6px);
    overflow: hidden;
    background: var(--white);
    border: 1px solid rgba(25, 199, 211, 0.22);
    box-shadow: 0 26px 56px rgba(75, 29, 149, 0.18);
    transition: transform 0.35s ease, box-shadow 0.35s ease;
    position: relative;
}

.admin-dashboard-frame::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.58);
    pointer-events: none;
}

.ai-robot-stage:hover .admin-dashboard-frame {
    transform: translateY(-4px);
    box-shadow: 0 30px 64px rgba(75, 29, 149, 0.22);
}

.admin-dashboard-img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    object-position: center top;
}

.hero-robot {
    position: absolute;
    width: clamp(210px, 29vw, 315px);
    right: -8px;
    bottom: 0;
    z-index: 3;
    filter: drop-shadow(0 20px 32px rgba(75, 29, 149, 0.25));
}

.ai-signal-badge {
    position: absolute;
    right: 122px;
    top: 18px;
    z-index: 4;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 9px 13px;
    border-radius: 999px;
    color: var(--white);
    background: linear-gradient(135deg, var(--secondary-soft), var(--primary));
    box-shadow: 0 14px 28px rgba(75, 29, 149, 0.22);
    font-size: 0.9rem;
    font-weight: 800;
    letter-spacing: 0.5px;
    border: 1px solid rgba(255,255,255,0.35);
}

.ai-signal-badge i {
    font-size: 0.95rem;
}

.floating-soft {
    animation: float-soft 5.5s ease-in-out infinite;
}

.mockup-container {
    width: 100%;
    max-width: 520px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    border: 1px solid rgba(25, 199, 211, 0.16);
}

.mockup-header {
    background: var(--secondary);
    padding: 14px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.dots span {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #ef4444;
    margin-right: 6px;
}
.dots span:nth-child(2) { background: #eab308; }
.dots span:nth-child(3) { background: #22c55e; }

.search-bar {
    width: 160px;
    height: 14px;
    background: rgba(255, 255, 255, 0.12);
    border-radius: 10px;
}

.mockup-body {
    display: flex;
    height: 320px;
}

.sidebar {
    width: 65px;
    background: var(--secondary-dark);
    padding: 20px 12px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.side-item {
    height: 8px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
}
.side-item.active {
    background: var(--primary);
    width: 80%;
}

.content {
    flex: 1;
    padding: 20px;
    background: #f1f5f9;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.top-cards {
    display: flex;
    gap: 12px;
}

.card {
    flex: 1;
    height: 55px;
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}
.c1 { border-left: 4px solid var(--primary); }
.c2 { border-left: 4px solid var(--cyan); }
.c3 { border-left: 4px solid var(--purple); }

.main-chart {
    flex: 1;
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: 20px;
    display: flex;
    align-items: flex-end;
}

.chart-line {
    width: 100%;
    height: 4px;
    background: #e2e8f0;
    position: relative;
}

/* --- Özellikler Kartları (Features Grid) --- */
.features-section {
    padding: 4rem 5%;
    background: linear-gradient(180deg, rgba(255,255,255,0.96) 0%, rgba(241, 236, 255, 0.55) 52%, rgba(237, 252, 255, 0.94) 100%);
}

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

.feature-card {
    background: linear-gradient(180deg, #ffffff 0%, #f4fdff 100%);
    padding: 3rem 2rem;
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(25, 199, 211, 0.10);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
    border-color: rgba(25, 199, 211, 0.24);
    background: var(--white);
}

.f-icon {
    width: 65px;
    height: 65px;
    margin: 0 auto 24px;
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: var(--white);
}

.bg-blue { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); }
.bg-cyan { background: linear-gradient(135deg, var(--cyan), var(--primary)); }
.bg-purple { background: linear-gradient(135deg, var(--purple), var(--secondary)); }

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    color: var(--secondary);
    font-weight: 700;
}

.feature-card p {
    color: var(--text-muted);
    line-height: 1.6;
    font-size: 0.95rem;
}

/* --- Görsel Arayüz İçerikli Modüller --- */
.modules-section {
    padding: 4rem 5%;
}


.alternative-bg {
    background: linear-gradient(180deg, rgba(255,255,255,0.92) 0%, rgba(241, 236, 255, 0.62) 100%);
}

.module-container {
    display: flex;
    align-items: center;
    gap: 3rem;
    background: var(--white);
    padding: 3rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(25, 199, 211, 0.16);
    background: linear-gradient(180deg, rgba(255,255,255,0.98) 0%, rgba(247, 254, 255, 0.95) 100%);
}

.module-container.reverse {
    flex-direction: row-reverse;
}

.module-text {
    flex: 1;
}

.module-tag {
    color: var(--primary);
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    display: block;
    margin-bottom: 8px;
}

.module-text h3 {
    font-size: 2.2rem;
    color: var(--secondary);
    margin-bottom: 18px;
    font-weight: 800;
}

.module-text p {
    color: var(--text-muted);
    font-size: 1.05rem;
    line-height: 1.7;
    margin-bottom: 24px;
}

.module-list {
    list-style: none;
}

.module-list li {
    margin-bottom: 12px;
    font-size: 1rem;
    color: var(--secondary);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 12px;
}

.text-cyan { color: var(--cyan); }

.module-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

/* --- Görsellerden İlham Alan Özel Arayüz Tasarımları --- */
.report-mockup {
    width: 100%;
    max-width: 380px;
    background: linear-gradient(180deg, var(--secondary) 0%, var(--secondary-dark) 100%);
    color: var(--white);
    padding: 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.r-header {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 24px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 12px;
}

.r-stats {
    display: flex;
    gap: 16px;
    margin-bottom: 28px;
}

.stat-box {
    flex: 1;
    background: rgba(255, 255, 255, 0.04);
    padding: 14px;
    border-radius: 12px;
    font-size: 0.8rem;
    color: #94a3b8;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.stat-box strong {
    display: block;
    font-size: 1.6rem;
    color: var(--white);
    margin-top: 4px;
}

.r-bar-chart {
    display: flex;
    align-items: flex-end;
    gap: 16px;
    height: 120px;
    padding-bottom: 5px;
}

.bar {
    flex: 1;
    background: linear-gradient(180deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: 6px 6px 0 0;
    position: relative;
    display: flex;
    justify-content: center;
}

.bar span {
    position: absolute;
    bottom: -22px;
    font-size: 0.75rem;
    color: #94a3b8;
}

/* Renk Kodlu Etüt ve Randevu Sihirbazı */
.calendar-mockup {
    width: 100%;
    max-width: 360px;
    background: var(--white);
    padding: 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(25, 199, 211, 0.16);
}

.cal-header {
    font-size: 1rem;
    font-weight: 700;
    color: var(--secondary);
    margin-bottom: 18px;
}

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

.cal-slot {
    padding: 16px;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 600;
    text-align: center;
}

.slot-busy { background: #fef2f2; color: var(--danger); }
.slot-available { background: #ecfdf5; color: var(--success); }
.slot-selected { background: #e0f2fe; color: var(--primary); border: 2px solid var(--primary); }

/* --- Alt Bilgi & CTA (Footer) --- */
.footer {
    background: linear-gradient(180deg, var(--secondary) 0%, var(--secondary-dark) 100%);
    color: var(--white);
    padding-top: 3.5rem;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    inset: auto -10% 25% auto;
    width: 320px;
    height: 320px;
    background: radial-gradient(circle, rgba(25, 199, 211, 0.20) 0%, transparent 68%);
    pointer-events: none;
}

.cta-box {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    padding: 0 20px;
}

.cta-box h2 {
    font-size: 2.3rem;
    margin-bottom: 12px;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.cta-box p {
    color: #94a3b8;
    margin-bottom: 2rem;
    font-size: 1.1rem;
    line-height: 1.6;
}

.footer-contact {
    max-width: 860px;
    margin: 3rem auto 0;
    padding: 0 20px;
    text-align: center;
}

.footer-contact h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    font-weight: 800;
}

.footer-contact p {
    color: #94a3b8;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.footer-contact-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.footer-contact-card {
    display: flex;
    align-items: center;
    gap: 14px;
    text-align: left;
    padding: 18px 20px;
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--white);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: all 0.3s ease;
}

.footer-contact-card:hover {
    transform: translateY(-3px);
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(25, 199, 211, 0.30);
}

.footer-contact-card i {
    width: 44px;
    height: 44px;
    border-radius: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(25, 199, 211, 0.16);
    color: var(--cyan);
    font-size: 1.15rem;
    flex-shrink: 0;
}

.footer-contact-card span {
    display: block;
    color: #94a3b8;
    font-size: 0.82rem;
    margin-bottom: 3px;
}

.footer-contact-card strong {
    display: block;
    color: var(--white);
    font-size: 1rem;
    word-break: break-word;
}

.pulse {
    display: inline-flex;
    margin: 0 auto;
    animation: pulse 2s infinite;
}

.footer-bottom {
    background: rgba(0, 0, 0, 0.2);
    padding: 25px 20px;
    text-align: center;
    margin-top: 3rem;
    font-size: 0.9rem;
    color: #d8cff5;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-bottom sup {
    font-size: 0.68em;
    margin-left: 2px;
    color: var(--primary-soft);
}

/* --- Tanıtım mobil hizalama düzeltmeleri --- */
.homework-status-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    color: #fff;
    margin-bottom: 10px;
}

.homework-status-row:last-child {
    margin-bottom: 0;
}

.homework-status-row-active {
    border-left: 4px solid var(--primary);
}

.homework-status-row-expired {
    border-left: 4px solid var(--danger);
}

.homework-status-title {
    min-width: 0;
    flex: 1 1 auto;
    color: var(--white);
    font-weight: 700;
    line-height: 1.35;
}

.homework-status-badge {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    white-space: nowrap;
    padding: 4px 8px;
    border-radius: 7px;
    font-size: 0.8rem;
    font-weight: 700;
    line-height: 1.2;
}

.homework-status-badge.active {
    color: var(--primary);
    background: rgba(14,165,233,0.2);
}

.homework-status-badge.expired {
    color: var(--danger);
    background: rgba(239,68,68,0.2);
}


/* --- Telefon Arama Onay Modalı --- */
.call-confirm-modal {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.22s ease, visibility 0.22s ease;
}

.call-confirm-modal.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.call-confirm-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.58);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.call-confirm-box {
    position: relative;
    width: min(100%, 440px);
    border-radius: 28px;
    padding: 28px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.96));
    border: 1px solid rgba(226, 232, 240, 0.9);
    box-shadow: 0 28px 80px rgba(15, 23, 42, 0.28);
    color: var(--secondary);
    transform: translateY(16px) scale(0.98);
    transition: transform 0.22s ease;
    overflow: hidden;
}

.call-confirm-modal.is-open .call-confirm-box {
    transform: translateY(0) scale(1);
}

.call-confirm-box::before {
    content: '';
    position: absolute;
    inset: -90px -110px auto auto;
    width: 220px;
    height: 220px;
    background: radial-gradient(circle, rgba(25, 199, 211, 0.22) 0%, transparent 68%);
    pointer-events: none;
}

.call-confirm-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 42px;
    height: 42px;
    border: 0;
    border-radius: 14px;
    background: rgba(15, 23, 42, 0.06);
    color: #64748b;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.22s ease;
}

.call-confirm-close:hover {
    background: rgba(239, 68, 68, 0.10);
    color: var(--danger);
}

.call-confirm-icon {
    width: 68px;
    height: 68px;
    border-radius: 22px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
    background: linear-gradient(135deg, rgba(25, 199, 211, 0.18), rgba(124, 58, 237, 0.14));
    color: var(--primary);
    font-size: 1.7rem;
}

.call-confirm-eyebrow {
    display: inline-flex;
    margin-bottom: 8px;
    color: var(--primary);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.call-confirm-content h3 {
    font-size: 1.45rem;
    line-height: 1.2;
    margin: 0 42px 10px 0;
    color: var(--secondary);
}

.call-confirm-content p {
    margin: 0 0 14px;
    color: #64748b;
    line-height: 1.55;
    font-weight: 500;
}

.call-confirm-number {
    display: inline-flex;
    align-items: center;
    padding: 10px 14px;
    border-radius: 999px;
    background: rgba(25, 199, 211, 0.10);
    color: var(--secondary);
    font-size: 1rem;
    border: 1px solid rgba(25, 199, 211, 0.18);
}

.call-confirm-actions {
    display: grid;
    grid-template-columns: 0.85fr 1.15fr;
    gap: 12px;
    margin-top: 24px;
}

.call-confirm-secondary,
.call-confirm-primary {
    min-height: 48px;
    border-radius: 16px;
    font-weight: 800;
    font-size: 0.95rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    text-decoration: none;
    transition: all 0.22s ease;
}

.call-confirm-secondary {
    border: 1px solid rgba(148, 163, 184, 0.35);
    background: #fff;
    color: #475569;
}

.call-confirm-secondary:hover {
    background: #f8fafc;
    border-color: rgba(100, 116, 139, 0.45);
}

.call-confirm-primary {
    border: 0;
    background: linear-gradient(135deg, var(--primary), var(--cyan));
    color: #fff;
    box-shadow: 0 14px 28px rgba(25, 199, 211, 0.22);
}

.call-confirm-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 18px 34px rgba(25, 199, 211, 0.30);
}

body.call-modal-open {
    overflow: hidden;
}

/* --- CSS Animasyon Mekanizmaları --- */
.floating { animation: float 5s ease-in-out infinite; }
.floating-reverse { animation: float-reverse 5s ease-in-out infinite; }

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
}

@keyframes float-reverse {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(12px); }
}

@keyframes float-soft {
    0%, 100% { transform: translateY(0px) rotate(-1deg); }
    50% { transform: translateY(-10px) rotate(2deg); }
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(25, 199, 211, 0.45); }
    70% { box-shadow: 0 0 0 16px rgba(25, 199, 211, 0); }
    100% { box-shadow: 0 0 0 0 rgba(25, 199, 211, 0); }
}

/* JS ile Scroll Esnasında Tetiklenecek Sınıflar */
.fade-in-up { opacity: 0; transform: translateY(25px); transition: all 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94); }
.fade-in-up.appear { opacity: 1; transform: translateY(0); }

.slide-up { opacity: 0; transform: translateY(40px); transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94); }
.slide-up.appear { opacity: 1; transform: translateY(0); }

.fade-in { opacity: 0; transition: opacity 0.9s ease; }
.fade-in.appear { opacity: 1; }

.delay-1 { transition-delay: 0.15s; }
.delay-2 { transition-delay: 0.3s; }
.delay-3 { transition-delay: 0.45s; }

/* --- Gelişmiş Mobil & Tablet (Responsive) Düzen Ayarları --- */
@media (max-width: 1200px) {
    .hero-content h1 { font-size: 3rem; }
    .module-container { gap: 2.5rem; padding: 2.6rem; }
}

@media (max-width: 992px) {
    body { padding-top: 70px; }
    .navbar { padding: 1rem 5%; }
    .nav-links, .nav-buttons { display: none; } /* Masaüstü menüsünü gizle */
    .hamburger { display: block; }               /* Mobil hamburger menüyü aç */

    .nav-links.nav-active .mobile-nav-actions {
        width: 100%;
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 10px;
        padding-top: 6px;
        margin-top: 2px;
        border-top: 1px solid rgba(25, 199, 211, 0.14);
    }

    .mobile-nav-actions .btn-login,
    .mobile-nav-actions .btn-demo {
        width: 100%;
        min-height: 46px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 11px 12px;
        border-radius: 999px;
        font-size: 0.88rem;
        font-weight: 800;
        text-align: center;
        white-space: nowrap;
    }

    .mobile-nav-actions .btn-login {
        color: var(--secondary);
        background: rgba(255, 255, 255, 0.92);
        border: 1px solid rgba(75, 29, 149, 0.14);
        box-shadow: 0 8px 18px rgba(75, 29, 149, 0.08);
    }

    .mobile-nav-actions .btn-demo {
        box-shadow: 0 8px 20px rgba(25, 199, 211, 0.26);
    }

    .hero { flex-direction: column; text-align: center; padding: 0.9rem 5% 1.2rem; gap: 1.8rem; min-height: auto; }
    .hero-content p { max-width: 600px; margin: 0 auto 2rem; }
    .hero-actions { justify-content: center; }
    .hero-visual { min-height: 390px; width: 100%; }
    .ai-robot-stage { height: 390px; max-width: 720px; }
    .robot-dashboard-pack { width: 80%; left: 2%; top: 22px; transform: none; }
    .hero-robot { right: 2%; bottom: 0; width: clamp(190px, 30vw, 260px); }
    .ai-signal-badge { right: 18%; top: 18px; }
    .hero-grid-dot.dot-right { right: 2%; }

    .module-container, .module-container.reverse { flex-direction: column; padding: 2rem; gap: 2rem; text-align: center; }
    .module-list {
        display: grid;
        gap: 12px;
        max-width: 620px;
        margin-inline: auto;
    }
    .module-list li {
        display: grid;
        grid-template-columns: 24px minmax(0, 1fr);
        align-items: center;
        justify-content: initial;
        gap: 12px;
        text-align: left;
    }
    .module-list li i {
        width: 24px;
        text-align: center;
        justify-self: center;
    }

    .section-title { font-size: 2rem; margin-bottom: 2.5rem; }
}

@media (max-width: 576px) {
    .nav-links.nav-active .mobile-nav-actions {
        grid-template-columns: 1fr;
    }

    .hero-content h1 { font-size: 2.35rem; }
    .hero-actions { flex-direction: column; width: 100%; }
    .btn-primary, .btn-outline { text-align: center; width: 100%; }
    .cta-box h2 { font-size: 1.8rem; }
    .footer-contact-grid { grid-template-columns: 1fr; }
    .footer-contact-card { padding: 16px; }
    .call-confirm-modal { padding: 16px; align-items: flex-end; }
    .call-confirm-box { width: 100%; padding: 24px 20px 20px; border-radius: 24px 24px 18px 18px; }
    .call-confirm-content h3 { font-size: 1.25rem; margin-right: 44px; }
    .call-confirm-actions { grid-template-columns: 1fr; }
    .call-confirm-secondary, .call-confirm-primary { width: 100%; }
    .module-container { padding: 1.35rem; }
    .hero-visual { min-height: 365px; }
    .ai-robot-stage { height: 365px; }
    .robot-dashboard-pack { left: 0; width: 88%; top: 22px; }
    .robot-dashboard-pack::before,
    .robot-dashboard-pack::after { display: none; }
    .hero-robot { right: -6px; bottom: -6px; width: 178px; }
    .ai-signal-badge { right: 94px; top: 4px; transform: scale(0.9); }
    .hero-grid-dot { width: 88px; height: 88px; background-size: 12px 12px; }
    .module-text h3 { font-size: 1.6rem; }
    .homework-status-row {
        padding: 14px 12px;
        gap: 8px;
    }
    .homework-status-title {
        font-size: 0.78rem;
    }
    .homework-status-badge {
        font-size: 0.72rem;
        padding: 4px 7px;
    }
}
/* --- AI Destekli Soru Çözme Tanıtım Bölümü --- */
.ai-question-section {
    position: relative;
    overflow: hidden;
}

.ai-question-section::before {
    content: "";
    position: absolute;
    inset: 10% auto auto -90px;
    width: 220px;
    height: 220px;
    border-radius: 999px;
    background: radial-gradient(circle, rgba(25, 199, 211, 0.20) 0%, rgba(25, 199, 211, 0) 70%);
    pointer-events: none;
}

.ai-question-container {
    position: relative;
    overflow: hidden;
}

.ai-question-container::after {
    content: "";
    position: absolute;
    right: -70px;
    bottom: -80px;
    width: 230px;
    height: 230px;
    border-radius: 999px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.18) 0%, rgba(139, 92, 246, 0) 72%);
    pointer-events: none;
}

.ai-question-text,
.ai-question-visual-wrap {
    position: relative;
    z-index: 1;
}

.ai-question-preview {
    width: min(100%, 430px);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(246, 253, 255, 0.96) 100%);
    border: 1px solid rgba(25, 199, 211, 0.18);
    border-radius: 28px;
    box-shadow: var(--shadow-lg);
    padding: 20px;
    color: var(--secondary);
}

.ai-question-preview-top {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.ai-question-magic {
    width: 50px;
    height: 50px;
    border-radius: 18px;
    display: grid;
    place-items: center;
    color: var(--white);
    background: linear-gradient(135deg, var(--primary), var(--purple));
    box-shadow: 0 16px 26px rgba(25, 199, 211, 0.24);
    flex: 0 0 auto;
}

.ai-question-preview-top strong {
    display: block;
    font-size: 1.08rem;
    font-weight: 800;
    color: var(--secondary);
}

.ai-question-preview-top span {
    display: block;
    margin-top: 2px;
    color: var(--text-muted);
    font-size: 0.8rem;
    font-weight: 700;
}

.ai-question-preview-top em {
    margin-left: auto;
    padding: 7px 10px;
    border-radius: 999px;
    background: rgba(139, 92, 246, 0.10);
    color: var(--secondary-soft);
    font-style: normal;
    font-size: 0.76rem;
    font-weight: 800;
    border: 1px solid rgba(139, 92, 246, 0.18);
}

.ai-question-rule-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin-bottom: 14px;
}

.ai-question-rule-row span {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    border-radius: 16px;
    background: var(--white);
    border: 1px solid rgba(25, 199, 211, 0.14);
    font-size: 0.78rem;
    font-weight: 800;
    color: var(--secondary);
}

.ai-question-rule-row i {
    color: var(--success);
}

.ai-question-form-mock {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.ai-question-field,
.ai-question-textarea,
.ai-question-result-mock {
    background: var(--white);
    border: 1px solid rgba(66, 48, 95, 0.10);
    border-radius: 18px;
    box-shadow: 0 10px 22px rgba(75, 29, 149, 0.06);
}

.ai-question-field {
    padding: 12px 14px;
    min-width: 0;
}

.ai-question-field.wide {
    grid-column: span 2;
}

.ai-question-field small {
    display: block;
    margin-bottom: 5px;
    color: var(--text-muted);
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    font-weight: 800;
}

.ai-question-field b {
    display: block;
    color: var(--secondary);
    font-size: 0.86rem;
    line-height: 1.35;
    overflow-wrap: anywhere;
}

.ai-question-textarea {
    grid-column: span 2;
    min-height: 92px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 16px;
    color: var(--text-muted);
    font-size: 0.88rem;
    font-weight: 700;
}

.ai-question-textarea i {
    color: var(--purple);
    font-size: 1.25rem;
}

.ai-question-result-mock {
    margin-top: 12px;
    padding: 15px;
}

.ai-question-result-title {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 9px;
    color: var(--secondary);
    font-size: 0.9rem;
    font-weight: 800;
}

.ai-question-result-title i {
    color: var(--primary);
}

.ai-question-result-mock p {
    margin: 0 0 6px;
    color: var(--text-muted);
    font-size: 0.8rem;
    line-height: 1.45;
    font-weight: 700;
}

.ai-question-result-mock p:last-child {
    margin-bottom: 0;
}

@media (max-width: 992px) {
    .ai-question-preview {
        max-width: 560px;
        margin-inline: auto;
        text-align: left;
    }

    .ai-question-text .module-list li {
        justify-content: flex-start;
        text-align: left;
    }
}

@media (max-width: 576px) {
    .ai-question-preview {
        padding: 16px;
        border-radius: 22px;
    }

    .ai-question-preview-top {
        align-items: flex-start;
    }

    .ai-question-magic {
        width: 44px;
        height: 44px;
        border-radius: 16px;
    }

    .ai-question-preview-top em {
        padding: 6px 9px;
        font-size: 0.7rem;
    }

    .ai-question-rule-row,
    .ai-question-form-mock {
        grid-template-columns: 1fr;
    }

    .ai-question-field.wide,
    .ai-question-textarea {
        grid-column: span 1;
    }

    .ai-question-textarea {
        min-height: 82px;
    }
}