/* ========================================
   ApiWA - Professional WhatsApp API System
   Nerzen Bilişim Teknolojileri
   ======================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
    /* Light Mode Colors */
    --primary: #25D366;
    --primary-dark: #1fb855;
    --primary-light: #43e67d;
    --secondary: #128C7E;
    --accent: #075E54;
    --danger: #DC143C;
    --warning: #FF9800;
    --success: #4CAF50;
    --info: #2196F3;
    
    /* Light Theme */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8F9FA;
    --bg-tertiary: #F0F2F5;
    --text-primary: #1A1A1A;
    --text-secondary: #666666;
    --text-tertiary: #999999;
    --border-color: #E4E6EB;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

[data-theme="dark"] {
    --bg-primary: #111827;
    --bg-secondary: #1F2937;
    --bg-tertiary: #374151;
    --text-primary: #F9FAFB;
    --text-secondary: #D1D5DB;
    --text-tertiary: #9CA3AF;
    --border-color: #374151;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.6);
}

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

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background var(--transition-base), color var(--transition-base);
    -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);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1.125rem; }

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

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

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

/* ========== LAYOUT ========== */

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.container-fluid {
    width: 100%;
    padding: 0 var(--spacing-lg);
}

/* ========== HEADER & NAVIGATION ========== */

header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all var(--transition-base);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
}

.brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    text-decoration: none;
}

.brand i {
    color: var(--primary);
    font-size: 1.75rem;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    list-style: none;
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.nav-link:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.nav-link.active {
    color: var(--primary);
    background: rgba(37, 211, 102, 0.1);
}

/* ========== BUTTONS ========== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover:not(:disabled) {
    background: #0f7269;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.btn-outline:hover:not(:disabled) {
    background: var(--bg-tertiary);
    border-color: var(--primary);
    color: var(--primary);
}

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

.btn-danger:hover:not(:disabled) {
    background: #c41230;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-icon {
    width: 2.5rem;
    height: 2.5rem;
    padding: 0;
    border-radius: var(--radius-full);
}

/* ========== CARDS ========== */

.card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: all var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.card-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    font-size: 1.125rem;
}

.card-body {
    padding: var(--spacing-lg);
}

.card-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

/* ========== FORMS ========== */

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 211, 102, 0.1);
}

.form-control::placeholder {
    color: var(--text-tertiary);
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23666666'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 1.5rem;
    padding-right: 2.5rem;
}

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

.form-text {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

.form-error {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--danger);
}

/* ========== TABLES ========== */

.table-container {
    overflow-x: auto;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

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

thead {
    background: var(--bg-tertiary);
}

th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border-color);
}

td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

tr:hover {
    background: var(--bg-secondary);
}

/* ========== BADGES ========== */

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-success {
    background: rgba(76, 175, 80, 0.1);
    color: var(--success);
}

.badge-warning {
    background: rgba(255, 152, 0, 0.1);
    color: var(--warning);
}

.badge-danger {
    background: rgba(220, 20, 60, 0.1);
    color: var(--danger);
}

.badge-info {
    background: rgba(33, 150, 243, 0.1);
    color: var(--info);
}

.badge-primary {
    background: rgba(37, 211, 102, 0.1);
    color: var(--primary);
}

/* ========== ALERTS ========== */

.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.alert i {
    font-size: 1.5rem;
}

.alert-success {
    background: rgba(76, 175, 80, 0.1);
    color: var(--success);
    border: 1px solid rgba(76, 175, 80, 0.2);
}

.alert-warning {
    background: rgba(255, 152, 0, 0.1);
    color: var(--warning);
    border: 1px solid rgba(255, 152, 0, 0.2);
}

.alert-danger {
    background: rgba(220, 20, 60, 0.1);
    color: var(--danger);
    border: 1px solid rgba(220, 20, 60, 0.2);
}

.alert-info {
    background: rgba(33, 150, 243, 0.1);
    color: var(--info);
    border: 1px solid rgba(33, 150, 243, 0.2);
}

/* ========== MODALS ========== */

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base);
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.modal {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: transform var(--transition-base);
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.modal-close {
    width: 2rem;
    height: 2rem;
    border-radius: var(--radius-full);
    border: none;
    background: transparent;
    color: var(--text-tertiary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

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

.modal-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
}

/* ========== THEME TOGGLE ========== */

.theme-toggle {
    width: 3rem;
    height: 3rem;
    border-radius: var(--radius-full);
    border: none;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    font-size: 1.25rem;
}

.theme-toggle:hover {
    background: var(--primary);
    color: white;
    transform: scale(1.1);
}

/* ========== DASHBOARD GRID ========== */

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.stat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.stat-icon {
    width: 3rem;
    height: 3rem;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

.stat-icon.primary { background: var(--primary); }
.stat-icon.secondary { background: var(--secondary); }
.stat-icon.success { background: var(--success); }
.stat-icon.info { background: var(--info); }

.stat-value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
}

.stat-label {
    color: var(--text-tertiary);
    font-size: 0.875rem;
    font-weight: 500;
}

/* ========== PRICING CARDS ========== */

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin: var(--spacing-2xl) 0;
}

.pricing-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.pricing-card.featured {
    border: 2px solid var(--primary);
    transform: scale(1.05);
}

.pricing-card.featured::before {
    content: 'Popüler';
    position: absolute;
    top: 1rem;
    right: -2rem;
    background: var(--primary);
    color: white;
    padding: 0.25rem 3rem;
    transform: rotate(45deg);
    font-size: 0.75rem;
    font-weight: 700;
}

.pricing-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-xl);
}

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

.pricing-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.pricing-price {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
}

.pricing-period {
    font-size: 1rem;
    color: var(--text-tertiary);
}

.pricing-features {
    list-style: none;
    margin: var(--spacing-xl) 0;
}

.pricing-features li {
    padding: var(--spacing-sm) 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
}

.pricing-features i {
    color: var(--primary);
    font-size: 1.25rem;
}

/* ========== CODE BLOCKS ========== */

pre {
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    overflow-x: auto;
    margin: var(--spacing-lg) 0;
}

code {
    font-family: 'Fira Code', 'Courier New', monospace;
    font-size: 0.875rem;
    color: var(--primary);
}

pre code {
    color: var(--text-primary);
}

/* ========== FOOTER ========== */

footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-2xl) 0;
    margin-top: var(--spacing-2xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: var(--spacing-lg);
    text-align: center;
    color: var(--text-tertiary);
}

/* ========== UTILITIES ========== */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.d-flex { display: flex; }
.align-items-center { align-items: center; }
.justify-content-between { justify-content: space-between; }
.justify-content-center { justify-content: center; }
.gap-1 { gap: var(--spacing-sm); }
.gap-2 { gap: var(--spacing-md); }
.gap-3 { gap: var(--spacing-lg); }

.w-full { width: 100%; }

/* ========== RESPONSIVE ========== */

@media (max-width: 768px) {
    html { font-size: 14px; }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }
    
    .container { padding: 0 var(--spacing-md); }
    
    .nav-menu {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-card.featured {
        transform: none;
    }
    
    .modal {
        width: 95%;
        margin: var(--spacing-md);
    }
}

/* ========== ANIMATIONS ========== */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        transform: translateX(-100%);
    }
    to {
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.fade-in {
    animation: fadeIn var(--transition-base) ease;
}

.slide-in {
    animation: slideIn var(--transition-base) ease;
}

/* ========== LOADING ========== */

.loading {
    display: inline-block;
    width: 1.5rem;
    height: 1.5rem;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-full);
    border-top-color: white;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ========== SCROLLBAR ========== */

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}