/* =====================================================
   Onbiron Endustriyel - Main Stylesheet
   ===================================================== */

/* CSS Variables */
:root {
    --primary: #00a8e8;
    --primary-dark: #0088c2;
    --secondary: #10b981;
    --secondary-dark: #059669;
    --background: #ffffff;
    --foreground: #1a1a2e;
    --muted: #f1f5f9;
    --muted-foreground: #64748b;
    --border: #e2e8f0;
    --card: #ffffff;
    --card-foreground: #1a1a2e;
    --destructive: #ef4444;
    --font-primary: 'Poppins', sans-serif;
    --font-secondary: 'Inter', sans-serif;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --radius: 0.5rem;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-secondary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--foreground);
    background-color: var(--background);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 600;
    line-height: 1.3;
}

a {
    color: inherit;
    text-decoration: none;
}

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

ul {
    list-style: none;
}

/* Container */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
}

@media (min-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }
}

/* =====================================================
   Header & Navigation
   ===================================================== */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--background);
    border-bottom: 1px solid var(--border);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-name {
    font-family: var(--font-primary);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--foreground);
}

.logo-tagline {
    font-size: 0.625rem;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: -2px;
}

.mobile-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--foreground);
    cursor: pointer;
}

@media (min-width: 768px) {
    .mobile-menu-btn {
        display: none;
    }
}

.nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--background);
    border-bottom: 1px solid var(--border);
    padding: 1rem;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-menu.active {
    display: flex;
}

@media (min-width: 768px) {
    .nav-menu {
        display: flex;
        position: static;
        flex-direction: row;
        gap: 0;
        padding: 0;
        border: none;
        background: none;
    }
}

.nav-menu li a {
    display: block;
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--muted-foreground);
    transition: color 0.2s;
}

.nav-menu li a:hover,
.nav-menu li a.active {
    color: var(--primary);
}

/* =====================================================
   Hero Section
   ===================================================== */
.hero {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #00a8e8 0%, #0088c2 30%, #007ab8 60%, #005a8a 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='80' height='70' viewBox='0 0 80 70'%3E%3Cpath fill='%23ffffff' opacity='0.08' d='M40 0L80 23.3V46.7L40 70L0 46.7V23.3L40 0z'/%3E%3C/svg%3E");
    background-size: 80px 70px;
}

.hero-content {
    position: relative;
    z-index: 1;
    color: white;
    max-width: 600px;
}

.hero-subtitle {
    font-size: 0.875rem;
    font-weight: 500;
    opacity: 0.8;
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 3.5rem;
    }
}

.hero-title .highlight {
    color: #fbbf24;
}

.hero-description {
    font-size: 1.125rem;
    opacity: 0.9;
    margin-bottom: 2rem;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

/* =====================================================
   Buttons
   ===================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-family: var(--font-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: all 0.2s;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
}

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

.btn-white:hover {
    background: rgba(255, 255, 255, 0.9);
}

.btn-outline {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    backdrop-filter: blur(4px);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
}

.btn-secondary {
    background: var(--muted);
    color: var(--foreground);
}

.btn-secondary:hover {
    background: var(--border);
}

.btn-destructive {
    background: var(--destructive);
    color: white;
}

.btn-destructive:hover {
    background: #dc2626;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.8125rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
}

/* =====================================================
   Sections
   ===================================================== */
.section {
    padding: 4rem 0;
}

@media (min-width: 768px) {
    .section {
        padding: 6rem 0;
    }
}

.section-muted {
    background: var(--muted);
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title {
    font-size: 1.75rem;
    color: var(--foreground);
    margin-bottom: 0.5rem;
}

@media (min-width: 768px) {
    .section-title {
        font-size: 2.25rem;
    }
}

.section-description {
    color: var(--muted-foreground);
    max-width: 600px;
    margin: 0 auto;
}

/* =====================================================
   Why Section (Features)
   ===================================================== */
.why-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 640px) {
    .why-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .why-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.why-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    text-align: center;
    transition: box-shadow 0.2s;
}

.why-card:hover {
    box-shadow: var(--shadow-md);
}

.why-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    color: white;
    font-size: 1.5rem;
}

.why-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.why-text {
    font-size: 0.875rem;
    color: var(--muted-foreground);
}

/* =====================================================
   Products Section
   ===================================================== */
.products-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 640px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .products-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.product-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: box-shadow 0.2s, transform 0.2s;
}

.product-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.product-image {
    height: 160px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
}

.product-content {
    padding: 1.25rem;
}

.product-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.product-desc {
    font-size: 0.875rem;
    color: var(--muted-foreground);
    margin-bottom: 1rem;
}

.product-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.875rem;
    color: var(--primary);
    font-weight: 500;
}

.product-link:hover {
    text-decoration: underline;
}

/* =====================================================
   Blog Section
   ===================================================== */
.blog-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .blog-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .blog-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.blog-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: box-shadow 0.2s;
}

.blog-card:hover {
    box-shadow: var(--shadow-md);
}

.blog-image {
    height: 180px;
    background: var(--muted);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--muted-foreground);
    font-size: 2rem;
}

.blog-content {
    padding: 1.25rem;
}

.blog-date {
    font-size: 0.75rem;
    color: var(--muted-foreground);
    margin-bottom: 0.5rem;
}

.blog-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.blog-excerpt {
    font-size: 0.875rem;
    color: var(--muted-foreground);
    margin-bottom: 1rem;
}

/* =====================================================
   Contact Section
   ===================================================== */
.contact-form-wrapper {
    max-width: 600px;
    margin: 0 auto;
}

.contact-form {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

@media (min-width: 640px) {
    .form-row {
        grid-template-columns: repeat(2, 1fr);
    }
}

.form-group {
    margin-bottom: 1rem;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--foreground);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: var(--font-secondary);
    font-size: 0.875rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--background);
    color: var(--foreground);
    transition: border-color 0.2s;
}

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

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

.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.form-checkbox input {
    margin-top: 0.25rem;
}

.form-checkbox label {
    font-size: 0.8125rem;
    color: var(--muted-foreground);
}

.form-checkbox a {
    color: var(--primary);
    text-decoration: underline;
}

.form-error {
    font-size: 0.75rem;
    color: var(--destructive);
    margin-top: 0.25rem;
}

.alert {
    padding: 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
}

.alert-success {
    background: #dcfce7;
    color: #166534;
    border: 1px solid #86efac;
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

/* =====================================================
   Footer
   ===================================================== */
.footer {
    background: #0f172a;
    color: #94a3b8;
    padding: 4rem 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.footer-brand {
    font-family: var(--font-primary);
    font-weight: 700;
    font-size: 1.25rem;
    color: white;
    display: block;
}

.footer-tagline {
    font-size: 0.625rem;
    color: var(--primary);
    text-transform: uppercase;
}

.footer-desc {
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.footer-social {
    display: flex;
    gap: 0.75rem;
}

.footer-social a {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: white;
    transition: background 0.2s;
}

.footer-social a:hover {
    background: var(--primary);
}

.footer-col h4 {
    font-size: 1rem;
    font-weight: 600;
    color: white;
    margin-bottom: 1rem;
}

.footer-col ul li {
    margin-bottom: 0.5rem;
}

.footer-col ul li a {
    font-size: 0.875rem;
    color: #94a3b8;
    transition: color 0.2s;
}

.footer-col ul li a:hover {
    color: white;
}

.footer-contact li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
}

.footer-contact li i {
    width: 16px;
    color: var(--primary);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1.5rem 0;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    text-align: center;
}

@media (min-width: 768px) {
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

.footer-bottom p {
    font-size: 0.8125rem;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-links a {
    font-size: 0.8125rem;
    color: #94a3b8;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: white;
}

/* =====================================================
   Page Headers
   ===================================================== */
.page-header {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    padding: 4rem 0;
    text-align: center;
    color: white;
}

.page-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

@media (min-width: 768px) {
    .page-title {
        font-size: 2.5rem;
    }
}

.breadcrumb {
    font-size: 0.875rem;
    opacity: 0.8;
}

.breadcrumb a {
    color: white;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

/* =====================================================
   Cards
   ===================================================== */
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

/* =====================================================
   Tables
   ===================================================== */
.table-wrapper {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.table th {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--muted-foreground);
    background: var(--muted);
}

.table tr:hover {
    background: var(--muted);
}

/* =====================================================
   Badges
   ===================================================== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 9999px;
}

.badge-primary {
    background: rgba(0, 168, 232, 0.1);
    color: var(--primary);
}

.badge-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--secondary);
}

.badge-warning {
    background: rgba(251, 191, 36, 0.1);
    color: #d97706;
}

.badge-destructive {
    background: rgba(239, 68, 68, 0.1);
    color: var(--destructive);
}

/* =====================================================
   Utilities
   ===================================================== */
.text-center {
    text-align: center;
}

.text-muted {
    color: var(--muted-foreground);
}

.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }

.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; }

.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 0.5rem; }
.gap-4 { gap: 1rem; }

.hidden { display: none; }

@media (min-width: 768px) {
    .md\:block { display: block; }
    .md\:flex { display: flex; }
}