/* KIVÉA Fashion - Custom Styles */
/* Production-Ready Mobile-First CSS */

/* === ROOT VARIABLES === */
:root {
    --primary: #183a50;
    --background: #fef7e5;
    --text-dark: #1a1a1a;
    --text-light: #666;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* === BASE STYLES === */
* {
    -webkit-tap-highlight-color: transparent;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Montserrat', sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* === MOBILE-FIRST RESPONSIVE UTILITIES === */

/* Touch-friendly buttons */
button,
a.btn,
.btn {
    min-height: 44px;
    min-width: 44px;
    touch-action: manipulation;
}

/* Improved form inputs for mobile */
input,
textarea,
select {
    font-size: 16px; /* Prevents zoom on iOS */
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
}

input[type="search"] {
    appearance: textfield;
    -webkit-appearance: textfield;
}

/* === LOADING STATES === */
.loading {
    position: relative;
    pointer-events: none;
    opacity: 0.6;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--primary);
    border-right-color: transparent;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* === PAGE LOADER === */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--background);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.3s, visibility 0.3s;
}

.page-loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(24, 58, 80, 0.1);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* === SMOOTH ANIMATIONS === */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-up {
    animation: slideUp 0.4s ease-out;
}

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

/* === IMAGE OPTIMIZATION === */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

img[loading="lazy"] {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

/* === PRODUCT CARDS === */
.product-card {
    transition: var(--transition);
    cursor: pointer;
}

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

.product-card:active {
    transform: translateY(-2px);
}

/* === TOAST NOTIFICATIONS === */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background: white;
    padding: 16px 24px;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    z-index: 10000;
    animation: slideInRight 0.3s ease-out;
    max-width: calc(100vw - 40px);
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.toast.success {
    border-left: 4px solid #10b981;
}

.toast.error {
    border-left: 4px solid #ef4444;
}

.toast.warning {
    border-left: 4px solid #f59e0b;
}

.toast.info {
    border-left: 4px solid #3b82f6;
}

/* === MODAL IMPROVEMENTS === */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9998;
    padding: 20px;
    backdrop-filter: blur(4px);
}

.modal-content {
    background: white;
    border-radius: 12px;
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalZoom 0.3s ease-out;
}

@keyframes modalZoom {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* === STICKY ELEMENTS === */
.sticky-header {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
}

/* === MOBILE NAVIGATION === */
@media (max-width: 768px) {
    .mobile-menu {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: white;
        z-index: 100;
        transform: translateX(-100%);
        transition: transform 0.3s ease-out;
    }
    
    .mobile-menu.active {
        transform: translateX(0);
    }
}

/* === ENHANCED FORMS === */
.form-group {
    margin-bottom: 1rem;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 16px;
    transition: var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(24, 58, 80, 0.1);
}

.form-input.error {
    border-color: #ef4444;
}

.form-error {
    color: #ef4444;
    font-size: 14px;
    margin-top: 4px;
}

/* === SKELETON LOADERS === */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 4px;
}

.skeleton-text {
    height: 16px;
    margin-bottom: 8px;
}

.skeleton-title {
    height: 24px;
    margin-bottom: 12px;
    width: 60%;
}

.skeleton-image {
    width: 100%;
    padding-bottom: 75%;
    position: relative;
}

/* === RESPONSIVE GRID === */
.responsive-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
}

@media (max-width: 640px) {
    .responsive-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 0.75rem;
    }
}

/* === TOUCH GESTURES === */
.swipeable {
    touch-action: pan-y;
    -webkit-user-drag: none;
}

/* === PWA SPECIFIC === */
.pwa-mode .pwa-only {
    display: block;
}

.pwa-only {
    display: none;
}

/* Safe area for notched devices */
@supports (padding: env(safe-area-inset-bottom)) {
    .safe-bottom {
        padding-bottom: env(safe-area-inset-bottom);
    }
}

/* === ACCESSIBILITY === */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Focus visible for keyboard navigation */
*:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* === PRINT STYLES === */
@media print {
    .no-print {
        display: none !important;
    }
    
    body {
        background: white;
    }
}

/* === DARK MODE SUPPORT === */
@media (prefers-color-scheme: dark) {
    :root {
        --text-dark: #e5e5e5;
        --text-light: #a0a0a0;
        --border-color: #333;
    }
}

/* === PERFORMANCE OPTIMIZATIONS === */
.will-change-transform {
    will-change: transform;
}

.will-change-opacity {
    will-change: opacity;
}

/* === CUSTOM SCROLLBAR === */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #0f2838;
}

/* === RESPONSIVE UTILITIES === */
@media (max-width: 640px) {
    .text-responsive {
        font-size: 14px;
    }
    
    .heading-responsive {
        font-size: 24px;
    }
    
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
}

@media (min-width: 641px) and (max-width: 1024px) {
    .text-responsive {
        font-size: 15px;
    }
    
    .heading-responsive {
        font-size: 28px;
    }
}

@media (min-width: 1025px) {
    .text-responsive {
        font-size: 16px;
    }
    
    .heading-responsive {
        font-size: 32px;
    }
}

/* === ANIMATIONS === */
@keyframes fade-in {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fade-out {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
    }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

@keyframes scale-in {
    from {
        transform: scale(0.9);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.animate-fade-in {
    animation: fade-in 0.3s ease-out;
}

.animate-fade-out {
    animation: fade-out 0.3s ease-out;
}

.animate-shake {
    animation: shake 0.5s ease-in-out;
}

.animate-scale-in {
    animation: scale-in 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* === REDUCED MOTION === */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* === ANIMATIONS === */
@keyframes scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.animate-scroll {
    animation: scroll 30s linear infinite;
}

.animate-scroll:hover {
    animation-play-state: paused;
}

@keyframes fade-in {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}