/* ============================================================================
   BIAPartner Kurumsal Web Sitesi - Modern Tasarım Sistemi
   ============================================================================ */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&family=Plus+Jakarta+Sans:wght@300;400;500;600;700&display=swap');

:root {
    /* Renk Paleti - Futuristik Koyu Lacivert ve Elektrik Turkuaz */
    --color-bg-main: #0b1120;
    --color-bg-card: #151f32;
    --color-bg-alt: #0f172a;
    
    --color-text-primary: #f8fafc;
    --color-text-secondary: #94a3b8;
    --color-text-muted: #64748b;
    
    --color-primary: #06b6d4; /* Elektrik Turkuaz */
    --color-primary-glow: rgba(6, 182, 212, 0.15);
    --color-primary-hover: #22d3ee;
    
    --color-secondary: #6366f1; /* İndigo Mavi */
    --color-secondary-glow: rgba(99, 102, 241, 0.15);
    
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    
    --color-border: #1e293b;
    --color-border-active: #334155;
    
    /* Tipografi */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    
    /* Arayüz Belirteçleri */
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 24px;
    --transition-smooth: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 25px rgba(6, 182, 212, 0.3);
}

/* ============================================================================
   1. RESET VE TEMEL STİLLER
   ============================================================================ */

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

body {
    background-color: var(--color-bg-main);
    color: var(--color-text-primary);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.25;
    color: var(--color-text-primary);
}

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

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

ul, ol {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ============================================================================
   2. ORTAK BİLEŞENLER VE CONTAINER'LAR
   ============================================================================ */

.container {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 100px 0;
}

.section-alt {
    background-color: var(--color-bg-alt);
}

.section-title-wrapper {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px auto;
}

.section-badge {
    display: inline-block;
    padding: 6px 16px;
    background-color: var(--color-primary-glow);
    color: var(--color-primary);
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 50px;
    margin-bottom: 16px;
    border: 1px solid rgba(6, 182, 212, 0.2);
}

.section-title {
    font-size: 38px;
    margin-bottom: 16px;
}

.section-desc {
    color: var(--color-text-secondary);
    font-size: 18px;
}

/* Butonlar */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    font-family: var(--font-heading);
    font-size: 15px;
    font-weight: 500;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition-smooth);
    border: 1px solid transparent;
}

.btn-primary {
    background-color: var(--color-primary);
    color: #040814;
    box-shadow: 0 4px 14px rgba(6, 182, 212, 0.4);
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
    color: #040814;
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-text-primary);
    border-color: var(--color-border);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.05);
    border-color: var(--color-border-active);
    transform: translateY(-2px);
}

/* Kartlar */
.card {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 30px;
    transition: var(--transition-smooth);
}

.card:hover {
    border-color: rgba(6, 182, 212, 0.3);
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

/* ============================================================================
   3. HEADER / NAVIGATION (GLASSMORPHISM)
   ============================================================================ */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(11, 17, 32, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-smooth);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    color: var(--color-text-primary);
}

.logo-icon {
    font-size: 24px;
    color: var(--color-primary);
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-link {
    color: var(--color-text-secondary);
    font-size: 15px;
    font-weight: 500;
    padding: 8px 0;
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: var(--transition-smooth);
}

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

.nav-dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 260px;
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 10px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-md);
}

.nav-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-link {
    display: block;
    padding: 10px 15px;
    color: var(--color-text-secondary);
    font-size: 14px;
    border-radius: 4px;
}

.dropdown-link:hover {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--color-text-primary);
    padding-left: 20px;
}

/* ============================================================================
   4. HERO ALANI (ANA SAYFA)
   ============================================================================ */

.hero-section {
    position: relative;
    padding: 180px 0 120px 0;
    background-image: radial-gradient(circle at 80% 20%, var(--color-primary-glow) 0%, transparent 40%),
                      radial-gradient(circle at 10% 80%, var(--color-secondary-glow) 0%, transparent 40%);
    overflow: hidden;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 60px;
    align-items: center;
}

.hero-title {
    font-size: 52px;
    line-height: 1.15;
    margin-bottom: 24px;
}

.hero-title span {
    color: var(--color-primary);
}

.hero-subtitle {
    font-size: 19px;
    color: var(--color-text-secondary);
    margin-bottom: 40px;
    max-width: 600px;
}

.hero-actions {
    display: flex;
    gap: 20px;
}

.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-glow-sphere {
    position: absolute;
    width: 320px;
    height: 320px;
    background: radial-gradient(circle, var(--color-primary) 0%, transparent 70%);
    opacity: 0.2;
    filter: blur(40px);
    z-index: 1;
}

.hero-image-wrapper {
    position: relative;
    z-index: 2;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    background-color: var(--color-bg-card);
}

/* ============================================================================
   5. ÇÖZÜMLER VE ÜRÜNLER KARTLARI
   ============================================================================ */

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.cozum-card {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.cozum-icon-box {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-sm);
    background-color: var(--color-primary-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    color: var(--color-primary);
    margin-bottom: 24px;
}

.cozum-title {
    font-size: 22px;
    margin-bottom: 12px;
}

.cozum-desc {
    color: var(--color-text-secondary);
    font-size: 15px;
    margin-bottom: 24px;
    flex-grow: 1;
}

.cozum-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
}

.cozum-link i {
    transition: var(--transition-smooth);
}

.cozum-link:hover i {
    transform: translateX(4px);
}

/* Ürün Kartları */
.urun-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
    padding: 0;
}

.urun-img-box {
    position: relative;
    height: 240px;
    background-color: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border);
}

.urun-badge {
    position: absolute;
    top: 20px;
    left: 20px;
    padding: 4px 12px;
    background-color: var(--color-secondary);
    border-radius: 50px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.urun-body {
    padding: 30px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.urun-code {
    color: var(--color-primary);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.urun-title {
    font-size: 24px;
    margin-bottom: 12px;
}

.urun-desc {
    color: var(--color-text-secondary);
    font-size: 15px;
    margin-bottom: 24px;
    flex-grow: 1;
}

.urun-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--color-border);
    padding-top: 20px;
}

/* ============================================================================
   6. İSTATİSTİK BÖLÜMÜ
   ============================================================================ */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

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

.stat-number {
    font-family: var(--font-heading);
    font-size: 48px;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 10px;
    text-shadow: 0 0 15px rgba(6, 182, 212, 0.2);
}

.stat-label {
    color: var(--color-text-secondary);
    font-size: 15px;
    font-weight: 500;
}

/* ============================================================================
   7. FORM TASARIMLARI (İLETİŞİM VE DEMO TALEBİ)
   ============================================================================ */

.form-wrapper {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 40px;
    max-width: 800px;
    margin: 0 auto;
}

.form-grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: 8px;
}

.form-control {
    width: 100%;
    background-color: var(--color-bg-main);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    color: var(--color-text-primary);
    font-family: var(--font-body);
    font-size: 15px;
    transition: var(--transition-smooth);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.15);
}

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

.form-checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 13px;
    color: var(--color-text-secondary);
    cursor: pointer;
    user-select: none;
}

.form-checkbox {
    margin-top: 4px;
    width: 16px;
    height: 16px;
    accent-color: var(--color-primary);
}

.validation-summary-errors {
    background-color: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: var(--radius-sm);
    padding: 15px;
    margin-bottom: 20px;
    color: var(--color-danger);
    font-size: 14px;
}

.field-validation-error {
    display: block;
    color: var(--color-danger);
    font-size: 12px;
    margin-top: 5px;
}

/* ============================================================================
   8. SIK SORULAN SORULAR (AKORDEON YAPISI)
   ============================================================================ */

.faq-wrapper {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    font-family: var(--font-heading);
    font-size: 17px;
    font-weight: 500;
    cursor: pointer;
    user-select: none;
}

.faq-answer {
    padding: 0 24px 20px 24px;
    color: var(--color-text-secondary);
    font-size: 15px;
    display: none;
    border-top: 1px solid rgba(255, 255, 255, 0.03);
    padding-top: 15px;
}

.faq-item.active {
    border-color: rgba(6, 182, 212, 0.3);
}

.faq-item.active .faq-answer {
    display: block;
}

.faq-icon {
    font-size: 18px;
    color: var(--color-primary);
    transition: var(--transition-smooth);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

/* ============================================================================
   9. ANLAŞILIR BİLDİRİMLER VE UYARI BANTLARI
   ============================================================================ */

.cookie-banner {
    position: fixed;
    bottom: 24px;
    left: 24px;
    right: 24px;
    max-width: 480px;
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 24px;
    z-index: 1000;
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    gap: 16px;
    transform: translateY(150%);
    transition: var(--transition-smooth);
}

.cookie-banner.show {
    transform: translateY(0);
}

.cookie-text {
    font-size: 13px;
    color: var(--color-text-secondary);
}

.cookie-actions {
    display: flex;
    gap: 12px;
}

.cookie-btn {
    padding: 8px 16px;
    font-size: 13px;
    border-radius: 4px;
}

/* Toast Bildirimler */
.toast-msg {
    position: fixed;
    top: 100px;
    right: 24px;
    background-color: var(--color-bg-card);
    border-left: 4px solid var(--color-primary);
    border-radius: 4px;
    padding: 16px 24px;
    z-index: 1001;
    box-shadow: var(--shadow-md);
    transform: translateX(150%);
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    gap: 12px;
}

.toast-msg.show {
    transform: translateX(0);
}

.toast-success {
    border-left-color: var(--color-success);
}

.toast-error {
    border-left-color: var(--color-danger);
}

/* ============================================================================
   10. FOOTER
   ============================================================================ */

.site-footer {
    background-color: #080c16;
    border-top: 1px solid var(--color-border);
    padding: 80px 0 30px 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 60px;
}

.footer-logo-box {
    margin-bottom: 20px;
}

.footer-desc {
    color: var(--color-text-secondary);
    font-size: 14px;
    margin-bottom: 24px;
}

.footer-socials {
    display: flex;
    gap: 15px;
}

.social-link {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
}

.social-link:hover {
    color: var(--color-primary);
    background-color: var(--color-primary-glow);
    border-color: var(--color-primary);
}

.footer-title {
    font-family: var(--font-heading);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--color-text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: var(--color-text-secondary);
    font-size: 14px;
}

.footer-links a:hover {
    color: var(--color-text-primary);
    padding-left: 5px;
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    color: var(--color-text-secondary);
    font-size: 14px;
    margin-bottom: 16px;
}

.footer-contact i {
    color: var(--color-primary);
    margin-top: 4px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--color-border);
    padding-top: 30px;
    color: var(--color-text-muted);
    font-size: 13px;
}

.footer-bottom-links {
    display: flex;
    gap: 24px;
}

.footer-bottom-links a {
    color: var(--color-text-muted);
}

.footer-bottom-links a:hover {
    color: var(--color-text-secondary);
}

/* ============================================================================
   11. DETAY VE KURUMSAL SAYFALAR
   ============================================================================ */

.page-header {
    background-color: var(--color-bg-alt);
    padding: 120px 0 60px 0;
    border-bottom: 1px solid var(--color-border);
    background-image: radial-gradient(circle at 50% 100%, var(--color-primary-glow) 0%, transparent 60%);
}

.page-title {
    font-size: 40px;
    margin-bottom: 12px;
}

.breadcrumbs {
    display: flex;
    gap: 10px;
    color: var(--color-text-muted);
    font-size: 14px;
}

.breadcrumbs a {
    color: var(--color-text-secondary);
}

.page-content-wrapper {
    padding: 80px 0;
}

.rich-content {
    font-size: 17px;
    line-height: 1.8;
    color: var(--color-text-secondary);
}

.rich-content p {
    margin-bottom: 24px;
}

.rich-content h2, .rich-content h3 {
    color: var(--color-text-primary);
    margin: 40px 0 20px 0;
}

.rich-content ul, .rich-content ol {
    margin-bottom: 24px;
    padding-left: 20px;
}

.rich-content li {
    margin-bottom: 10px;
    position: relative;
}

/* ============================================================================
   12. RESPONSIVE DÜZENLER & MOBİL UYUMLULUK
   ============================================================================ */

.values-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.content-sidebar-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
}

.contact-page-grid {
    display: grid;
    grid-template-columns: 1.1fr 1.9fr;
    gap: 50px;
}

.menu-toggle {
    display: none;
}

.mobile-only-demo-link {
    display: none !important;
}

.header-action-btn {
    display: block;
}

@media (max-width: 1024px) {
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    .hero-actions {
        justify-content: center;
    }
    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .grid-3, .grid-2, .form-grid-2, .values-grid, .content-sidebar-grid, .contact-page-grid {
        grid-template-columns: 1fr !important;
        gap: 20px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .site-header {
        position: fixed;
    }
    
    .header-action-btn {
        display: none;
    }
    
    .menu-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        background: transparent;
        border: 1px solid var(--color-border);
        color: var(--color-text-primary);
        font-size: 20px;
        width: 40px;
        height: 40px;
        border-radius: var(--radius-sm);
        cursor: pointer;
        transition: var(--transition-smooth);
        z-index: 1001;
    }
    
    .menu-toggle:hover {
        border-color: var(--color-primary);
        color: var(--color-primary);
    }
    
    .main-nav {
        display: none;
        position: absolute;
        top: 80px;
        left: 0;
        right: 0;
        background-color: rgba(11, 17, 32, 0.98);
        backdrop-filter: blur(15px);
        -webkit-backdrop-filter: blur(15px);
        border-bottom: 1px solid var(--color-border);
        padding: 30px 24px;
        flex-direction: column;
        align-items: stretch;
        gap: 15px;
        max-height: calc(100vh - 80px);
        overflow-y: auto;
    }
    
    .site-header.nav-open .main-nav {
        display: flex;
    }
    
    .mobile-only-demo-link {
        display: block !important;
        margin-top: 10px;
        padding: 12px;
        background-color: var(--color-primary);
        color: #040814 !important;
        border-radius: var(--radius-sm);
        text-align: center;
        font-weight: 600;
    }
    
    .mobile-only-demo-link:hover {
        background-color: var(--color-primary-hover);
    }
    
    /* Mobil Menü İçin Dropdown Düzeni */
    .nav-dropdown .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background-color: rgba(255, 255, 255, 0.02);
        border: none;
        border-left: 2px solid var(--color-border);
        padding-left: 15px;
        margin-top: 8px;
        margin-left: 10px;
        min-width: 100%;
        display: none;
    }
    
    .nav-dropdown.active .dropdown-menu {
        display: block;
    }
    
    .nav-dropdown > .nav-link {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    
    .nav-dropdown > .nav-link i {
        transition: transform 0.3s ease;
    }
    
    .nav-dropdown.active > .nav-link i {
        transform: rotate(180deg);
    }
    
    .form-wrapper {
        padding: 24px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}