/**
 * BerceSoft - Ultra Professional Responsive CSS
 * @version 2.0
 * @author BerceSoft Development Team
 */

/* ============================================
   ROOT VARIABLES
   ============================================ */
:root {
    /* Primary Colors */
    --primary-color: #0066FF;
    --primary-dark: #0052CC;
    --primary-light: #3385FF;
    --primary-gradient: linear-gradient(135deg, #0066FF 0%, #00B4D8 100%);
    
    /* Secondary Colors */
    --secondary-color: #6C757D;
    --secondary-dark: #545B62;
    --secondary-light: #ADB5BD;
    
    /* Status Colors */
    --success-color: #28A745;
    --danger-color: #DC3545;
    --warning-color: #FFC107;
    --info-color: #17A2B8;
    
    /* Neutral Colors */
    --white: #FFFFFF;
    --black: #000000;
    --gray-50: #F8F9FA;
    --gray-100: #F1F3F5;
    --gray-200: #E9ECEF;
    --gray-300: #DEE2E6;
    --gray-400: #CED4DA;
    --gray-500: #ADB5BD;
    --gray-600: #6C757D;
    --gray-700: #495057;
    --gray-800: #343A40;
    --gray-900: #212529;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-base: 12.8px; /* %20 küçültüldü (16px * 0.8 = 12.8px) */
    --font-size-sm: 11.2px; /* %20 küçültüldü (14px * 0.8 = 11.2px) */
    --font-size-lg: 14.4px; /* %20 küçültüldü (18px * 0.8 = 14.4px) */
    --font-size-xl: 16px; /* %20 küçültüldü (20px * 0.8 = 16px) */
    --line-height-base: 1.6;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: var(--font-size-base); /* 12.8px - %20 küçültüldü */
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--gray-900);
    background-color: var(--gray-50);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

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

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

input,
textarea,
select {
    font-family: inherit;
    font-size: inherit;
}

/* ============================================
   PRELOADER
   ============================================ */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity var(--transition-base);
}

.preloader-content {
    text-align: center;
}

.preloader-content p {
    margin-top: var(--spacing-md);
    color: var(--gray-600);
    font-weight: 500;
}

/* ============================================
   TOP BAR
   ============================================ */
.top-bar {
    background: var(--gray-900);
    color: var(--white);
    padding: var(--spacing-sm) 0;
    font-size: var(--font-size-sm);
}

.top-bar-left,
.top-bar-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.top-bar-right {
    justify-content: flex-end;
}

.top-bar-link {
    color: var(--white);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: color var(--transition-fast);
}

.top-bar-link:hover {
    color: var(--primary-light);
}

.top-bar-text {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

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

.top-bar-social a {
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--white);
    transition: all var(--transition-fast);
}

.top-bar-social a:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

/* ============================================
   NAVBAR
   ============================================ */
.navbar {
    padding: var(--spacing-md) 0;
    transition: all var(--transition-base);
}

.navbar.sticky-top {
    box-shadow: var(--shadow-md);
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 700;
    font-size: var(--font-size-xl);
    color: var(--gray-900);
}

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

.logo-img {
    height: 40px;
    width: auto;
}

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

/* Mobile Icons */
.mobile-icons {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.mobile-icon {
    position: relative;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-700);
    font-size: 20px;
    transition: color var(--transition-fast);
}

.mobile-icon:hover {
    color: var(--primary-color);
}

/* Nav Links */
.nav-link {
    font-weight: 500;
    color: var(--gray-700);
    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-sm);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    background: rgba(0, 102, 255, 0.05);
}

.nav-link i {
    font-size: 18px;
}

/* Dropdown Menu */
.dropdown-menu {
    border: none;
    box-shadow: var(--shadow-xl);
    border-radius: var(--radius-lg);
    padding: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.dropdown-item {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--gray-100);
    color: var(--primary-color);
}

.dropdown-item i {
    width: 20px;
    text-align: center;
}

.dropdown-divider {
    margin: var(--spacing-sm) 0;
}

/* Cart Badge */
.cart-badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--danger-color);
    color: var(--white);
    font-size: 11px;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: var(--radius-full);
    line-height: 1;
    min-width: 18px;
    text-align: center;
}

/* Navbar Actions */
.navbar-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: var(--gray-100);
    color: var(--gray-700);
    transition: all var(--transition-fast);
}

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

.btn-user {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--gray-100);
    border-radius: var(--radius-md);
    color: var(--gray-700);
    font-weight: 500;
    transition: all var(--transition-fast);
}

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

/* Mobile Auth */
.mobile-auth {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) 0;
    border-top: 1px solid var(--gray-200);
    margin-top: var(--spacing-md);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-weight: 600;
    font-size: var(--font-size-base);
    line-height: 1.5;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    border: 2px solid transparent;
    cursor: pointer;
    text-decoration: none;
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.2);
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: var(--white);
}

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

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

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

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

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

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

.btn-warning {
    background: var(--warning-color);
    color: var(--gray-900);
}

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

.btn-light {
    background: var(--gray-100);
    color: var(--gray-900);
}

.btn-dark {
    background: var(--gray-900);
    color: var(--white);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-sm);
}

/* ============================================
   ALERTS
   ============================================ */
.alert-container {
    position: fixed;
    top: 80px;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 600px;
    z-index: var(--z-tooltip);
}

.alert {
    display: flex;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    border: none;
    font-weight: 500;
}

.alert i {
    font-size: 20px;
}

.alert-success {
    background: #D4EDDA;
    color: #155724;
}

.alert-danger {
    background: #F8D7DA;
    color: #721C24;
}

.alert-warning {
    background: #FFF3CD;
    color: #856404;
}

.alert-info {
    background: #D1ECF1;
    color: #0C5460;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--gray-900);
    color: var(--gray-300);
    margin-top: var(--spacing-3xl);
}

.footer-main {
    padding: var(--spacing-3xl) 0;
}

.footer-widget {
    margin-bottom: var(--spacing-lg);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.footer-logo-img {
    height: 40px;
    width: auto;
}

.footer-logo-text {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--white);
    margin: 0;
}

.footer-description {
    color: var(--gray-400);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

.footer-stats {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.footer-stat-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.footer-stat-item i {
    font-size: 24px;
    color: var(--primary-color);
}

.footer-stat-item strong {
    display: block;
    color: var(--white);
    font-size: var(--font-size-lg);
}

.footer-stat-item span {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--gray-400);
}

.footer-widget-title {
    color: var(--white);
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    position: relative;
    padding-bottom: var(--spacing-sm);
}

.footer-widget-title::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 40px;
    height: 3px;
    background: var(--primary-gradient);
    border-radius: var(--radius-full);
}

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

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

.footer-links a {
    color: var(--gray-400);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary-color);
    padding-left: var(--spacing-sm);
}

.footer-links i {
    font-size: 12px;
}

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

.footer-contact li {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.footer-contact i {
    font-size: 20px;
    color: var(--primary-color);
    margin-top: 4px;
}

.footer-contact strong {
    display: block;
    color: var(--white);
    margin-bottom: var(--spacing-xs);
}

.footer-contact span,
.footer-contact a {
    display: block;
    color: var(--gray-400);
    font-size: var(--font-size-sm);
}

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

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

.social-links {
    display: flex;
    gap: var(--spacing-sm);
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--white);
    transition: all var(--transition-fast);
}

.social-link:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.social-link.facebook {
    background: #1877F2;
}

.social-link.twitter {
    background: #1DA1F2;
}

.social-link.instagram {
    background: linear-gradient(45deg, #F58529, #DD2A7B, #8134AF);
}

.social-link.linkedin {
    background: #0A66C2;
}

.social-link.youtube {
    background: #FF0000;
}

/* Footer Payment */
.footer-payment {
    background: rgba(0, 0, 0, 0.2);
    padding: var(--spacing-lg) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.payment-title {
    color: var(--white);
    font-size: var(--font-size-base);
    font-weight: 600;
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.payment-methods {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.payment-icon {
    height: 30px;
    width: auto;
    opacity: 0.8;
    transition: opacity var(--transition-fast);
}

.payment-icon:hover {
    opacity: 1;
}

/* Footer Bottom */
.footer-bottom {
    padding: var(--spacing-lg) 0;
    background: rgba(0, 0, 0, 0.3);
}

.copyright {
    color: var(--gray-400);
    font-size: var(--font-size-sm);
}

.copyright strong {
    color: var(--white);
}

.footer-bottom-links {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    justify-content: center;
}

.footer-bottom-links a {
    color: var(--gray-400);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

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

/* ============================================
   BACK TO TOP
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-gradient);
    color: var(--white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: var(--z-fixed);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-2xl);
}

/* ============================================
   WHATSAPP FLOAT
   ============================================ */
.whatsapp-float {
    position: fixed;
    bottom: 90px;
    left: 30px;
    width: 60px;
    height: 60px;
    background: #25D366;
    color: var(--white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    box-shadow: var(--shadow-xl);
    transition: all var(--transition-base);
    z-index: var(--z-fixed);
    animation: pulse 2s infinite;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-2xl);
    color: var(--white);
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
    }
    50% {
        box-shadow: 0 0 0 20px rgba(37, 211, 102, 0);
    }
}

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

/* Tablet */
@media (max-width: 991px) {
    .navbar-collapse {
        background: var(--white);
        padding: var(--spacing-md);
        margin-top: var(--spacing-md);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-lg);
    }
    
    .nav-link {
        padding: var(--spacing-md);
    }
    
    .footer-main {
        padding: var(--spacing-2xl) 0;
    }
}

/* Mobile */
@media (max-width: 767px) {
    :root {
        --font-size-base: 15px;
    }
    
    .top-bar-left,
    .top-bar-right {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .footer-stats {
        flex-direction: column;
    }
    
    .payment-methods {
        justify-content: center;
    }
    
    .footer-bottom-links {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .back-to-top {
        width: 45px;
        height: 45px;
        font-size: 20px;
        right: 20px;
    }
    
    .whatsapp-float {
        width: 45px;
        height: 45px;
        font-size: 20px;
        left: 20px;
        bottom: 80px;
    }
    
    .alert-container {
        width: 95%;
        top: 70px;
    }
}

/* Small Mobile */
@media (max-width: 575px) {
    :root {
        --spacing-xl: 1.5rem;
        --spacing-2xl: 2rem;
        --spacing-3xl: 2.5rem;
    }
    
    .logo-img {
        height: 32px;
    }
    
    .navbar-brand {
        font-size: var(--font-size-lg);
    }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-gradient {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.shadow-custom {
    box-shadow: var(--shadow-xl);
}

.rounded-custom {
    border-radius: var(--radius-xl);
}

.transition-all {
    transition: all var(--transition-base);
}

/* Print Styles */
@media print {
    .top-bar,
    .navbar,
    .footer,
    .back-to-top,
    .whatsapp-float,
    .alert-container {
        display: none !important;
    }
}