/* ============================================
   Custora CRM - Main Stylesheet
   Modern, Responsive, SEO-Optimized
   ============================================ */

:root {
    /* Logo Renkleri - Gradient: Indigo → Teal */
    --primary-indigo: #1E3A8A;
    --primary-dark: #4B0082;
    --accent-teal: #14B8A6;
    --accent-teal-light: #2DD4BF;

    /* Renk Paleti */
    --color-primary: var(--primary-indigo);
    --color-secondary: var(--accent-teal);
    --color-gradient-start: var(--primary-indigo);
    --color-gradient-end: var(--accent-teal);

    /* Text Colors */
    --text-primary: #1F2937;
    --text-secondary: #4B5563;
    --text-muted: #6B7280;
    --text-light: #9CA3AF;

    /* Background Colors */
    --bg-light: #F8FAFC;
    --bg-white: #FFFFFF;
    --bg-dark: #1A252F;
    --bg-gradient: linear-gradient(135deg, var(--color-gradient-start) 0%, var(--color-gradient-end) 100%);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-base: 1rem;
    --font-size-sm: 0.875rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3rem;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.15);

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ============================================
   Reset & Base Styles
   ============================================ */

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   Typography
   ============================================ */

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: var(--font-size-5xl);
}

h2 {
    font-size: var(--font-size-4xl);
}

h3 {
    font-size: var(--font-size-3xl);
}

h4 {
    font-size: var(--font-size-2xl);
}

h5 {
    font-size: var(--font-size-xl);
}

h6 {
    font-size: var(--font-size-lg);
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

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

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

/* ============================================
   Navigation
   ============================================ */

.navbar {
    background: var(--bg-white);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-sm) 0;
    transition: all var(--transition-base);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
    padding: 0.75rem 0;
}

.navbar-brand img {
    width: 160px;
    height: 65px;
    object-fit: contain;
    transition: transform var(--transition-base);
}

.navbar-brand:hover img {
    transform: scale(1.05);
}

.navbar-nav .nav-link {
    color: var(--text-primary);
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: color var(--transition-base);
    position: relative;
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--bg-gradient);
    transition: width var(--transition-base);
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
    width: 80%;
}

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

.navbar-toggler {
    border: none;
    padding: 0.25rem 0.5rem;
}

.navbar-toggler:focus {
    box-shadow: none;
}

/* ============================================
   Buttons
   ============================================ */

.btn-custora {
    background: var(--bg-gradient);
    color: white;
    padding: 0.75rem 2rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    border: none;
    transition: all var(--transition-base);
    text-decoration: none;
    display: inline-block;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
}

.btn-custora:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    color: white;
}

.btn-custora-outline {
    background: transparent;
    color: var(--color-primary);
    padding: 0.75rem 2rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    border: 2px solid var(--color-primary);
    transition: all var(--transition-base);
    text-decoration: none;
    display: inline-block;
    cursor: pointer;
}

.btn-custora-outline:hover {
    background: var(--color-primary);
    color: white;
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* ============================================
   Hero Section
   ============================================ */

.hero-section {
    padding: 8rem 0 6rem;
    background: linear-gradient(135deg, #F8FAFC 0%, #E0E7FF 50%, #CFFAFE 100%);
    position: relative;
    overflow: hidden;
    margin-top: 70px;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-gradient);
    opacity: 0.05;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-weight: 800;
    font-size: var(--font-size-5xl);
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    background: var(--bg-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    margin-top: var(--spacing-md);
}

.hero-image {
    position: relative;
    z-index: 1;
}

.hero-image img {
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-slow);
}

.hero-image:hover img {
    transform: scale(1.02);
}

/* ============================================
   Feature Cards
   ============================================ */

.feature-box {
    background: var(--bg-white);
    padding: var(--spacing-lg) var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    height: 100%;
    border-top: 4px solid transparent;
    position: relative;
    overflow: hidden;
}

.feature-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--bg-gradient);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.feature-box:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-md);
}

.feature-box:hover::before {
    transform: scaleX(1);
}

.icon-circle {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.1) 0%, rgba(20, 184, 166, 0.1) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    transition: all var(--transition-base);
}

.feature-box:hover .icon-circle {
    background: var(--bg-gradient);
    color: white;
    transform: scale(1.1) rotate(5deg);
}

/* ============================================
   Module Sections
   ============================================ */

.module-section {
    padding: var(--spacing-xl) 0;
}

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

.module-img {
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-slow);
}

.module-img:hover {
    transform: scale(1.02);
}

.module-content h3 {
    margin-bottom: var(--spacing-sm);
}

.module-content .lead {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.feature-list {
    list-style: none;
    padding: 0;
}

.feature-list li {
    padding: var(--spacing-sm) 0;
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.feature-list li i {
    color: var(--color-secondary);
    margin-top: 0.25rem;
    flex-shrink: 0;
}

/* ============================================
   Statistics Section
   ============================================ */

.stats-section {
    background: var(--bg-gradient);
    color: white;
    padding: var(--spacing-xl) 0;
    position: relative;
    overflow: hidden;
}

.stats-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.stat-item {
    text-align: center;
    position: relative;
    z-index: 1;
}

.stat-number {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

.stat-label {
    font-size: var(--font-size-lg);
    opacity: 0.9;
}

/* ============================================
   Footer
   ============================================ */

footer {
    background: var(--bg-dark);
    color: #BDC3C7;
    padding-top: var(--spacing-xl);
}

.footer-logo {
    width: 200px;
    height: 50px;
    margin-bottom: var(--spacing-md);
    background: white;
    padding: 5px;
    border-radius: var(--radius-md);
    object-fit: contain;
}

.footer-section h5 {
    color: white;
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.footer-section ul {
    list-style: none;
    padding: 0;
}

.footer-section ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-section a {
    color: #BDC3C7;
    transition: color var(--transition-base);
}

.footer-section a:hover {
    color: var(--color-secondary);
}

.social-icons {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.social-icons a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: white;
    transition: all var(--transition-base);
}

.social-icons a:hover {
    background: var(--color-secondary);
    transform: translateY(-3px);
    color: white;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-md) 0;
    text-align: center;
    margin-top: var(--spacing-xl);
}

/* ============================================
   Modal Styles
   ============================================ */

.modal-content {
    border-radius: var(--radius-lg);
    border: none;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    border-bottom: 1px solid var(--bg-light);
    padding: var(--spacing-md);
}

.modal-body {
    padding: var(--spacing-md);
}

.credential-box {
    background: var(--bg-light);
    border: 2px dashed var(--color-primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin: var(--spacing-md) 0;
}

/* ============================================
   Utility Classes
   ============================================ */

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-subtitle {
    color: var(--text-muted);
    text-align: center;
    margin-bottom: var(--spacing-xl);
    font-size: var(--font-size-lg);
}

.text-gradient {
    background: var(--bg-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.bg-gradient {
    background: var(--bg-gradient);
}

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

/* ============================================
   Language Switcher
   ============================================ */

.language-switcher {
    display: flex;
    gap: var(--spacing-xs);
    align-items: center;
}

.lang-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--color-primary);
    background: transparent;
    color: var(--color-primary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-base);
    font-weight: 500;
}

.lang-btn.active {
    background: var(--bg-gradient);
    color: white;
    border-color: transparent;
}

.lang-btn:hover:not(.active) {
    background: rgba(30, 58, 138, 0.1);
}

/* ============================================
   Lightbox Zoom
   ============================================ */
#lightboxImage {
    max-height: 100vh;
    max-width: 100%;
    object-fit: contain;
    cursor: zoom-in;
    transition: width 0.3s ease;
}

#lightboxImage.zoomed {
    max-width: none;
    max-height: none;
    width: 250%;
    /* Scales up significantly on mobile */
    cursor: zoom-out;
    object-fit: contain;
}

.modal-fullscreen .modal-body {
    overflow: auto;
    /* Enable scrolling when zoomed */
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(0, 0, 0, 0.95);
}