/*
 * GemsStore - Main Stylesheet
 * Colors: #334139, #1E2D24, #C52184, #E574BC, #F9B4ED
 */

/* ============ IMPORTS ============ */
@import url('https://fonts.googleapis.com/css2?family=Lora:wght@400;500;600;700&family=Nunito+Sans:wght@300;400;500;600;700&display=swap');

/* ============ CSS VARIABLES ============ */
:root {
    /* Brand Colors */
    --color-primary: #334139;
    --color-primary-dark: #1E2D24;
    --color-accent: #C52184;
    --color-accent-hover: #E574BC;
    --color-accent-light: #F9B4ED;

    /* Neutral */
    --color-white: #ffffff;
    --color-black: #111111;
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;

    /* Typography */
    --font-heading: 'Lora', Georgia, serif;
    --font-body: 'Nunito Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* Layout */
    --container-max: 1280px;
    --container-padding: 1rem;
    --header-height: 70px;

    /* Borders */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 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);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;

    /* Z-index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-modal-backdrop: 300;
    --z-modal: 400;
    --z-toast: 500;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-gray-700);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
}

@media (max-width: 768px) {
    body {
        padding-bottom: 70px;
    }
}

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

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

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

ul, ol { list-style: none; }
input, textarea, select { font-family: inherit; font-size: inherit; }

/* ============ TYPOGRAPHY ============ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-primary);
}

h1 { font-size: clamp(2rem, 4vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.75rem); }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }

p { margin-bottom: var(--space-md); }
p:last-child { margin-bottom: 0; }

/* ============ LAYOUT ============ */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section {
    padding: var(--space-lg) 0;
}

.section-light {
    background: var(--color-gray-50);
}

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

.section-header h2 {
    margin-bottom: var(--space-sm);
}

.section-header p {
    color: var(--color-gray-500);
    max-width: 600px;
    margin: 0 auto;
}

.grid {
    display: grid;
    gap: var(--space-lg);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ============ UTILITIES ============ */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-accent { color: var(--color-accent); }
.text-primary { color: var(--color-primary); }
.text-muted { color: var(--color-gray-500); }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

.mt-1 { margin-top: var(--space-md); }
.mt-2 { margin-top: var(--space-xl); }
.mt-3 { margin-top: var(--space-2xl); }
.mb-1 { margin-bottom: var(--space-md); }
.mb-2 { margin-bottom: var(--space-xl); }
.mb-3 { margin-bottom: var(--space-2xl); }

/* Page Title */
.page-title {
    font-size: clamp(1.4rem, 3vw, 2rem);
    font-weight: 700;
    margin-top: var(--space-xl);
    margin-bottom: var(--space-xl);
}

/* Alerts */
.alert {
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    font-size: 0.88rem;
    margin-bottom: var(--space-lg);
    line-height: 1.5;
}

.alert ul {
    padding-left: var(--space-lg);
    list-style: disc;
}

.alert-success {
    background: #ecfdf5;
    border: 1px solid #a7f3d0;
    color: #065f46;
}

.alert-error {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #991b1b;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    border: 0;
}

.overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: var(--z-modal-backdrop);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}
.overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ============ STAR RATINGS ============ */
.stars {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    color: #f59e0b;
    font-size: 0.875rem;
}
.stars .star-count {
    color: var(--color-gray-500);
    font-size: 0.8rem;
    margin-left: 4px;
}

/* ============ BADGE ============ */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.2em 0.6em;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.badge-sale {
    background: var(--color-accent);
    color: var(--color-white);
}
.badge-new {
    background: var(--color-primary);
    color: var(--color-white);
}

/* ============ TOAST NOTIFICATIONS ============ */
.toast-container {
    position: fixed;
    top: var(--space-xl);
    right: var(--space-xl);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.toast {
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    background: var(--color-white);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    animation: slideIn 0.3s ease;
    min-width: 280px;
}

.toast-success { border-left: 4px solid #10b981; }
.toast-error { border-left: 4px solid #ef4444; }
.toast-info { border-left: 4px solid var(--color-accent); }

.toast .toast-close {
    margin-left: auto;
    cursor: pointer;
    color: var(--color-gray-400);
}

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

/* ============ LOADING SPINNER ============ */
.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--color-gray-200);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
        --header-height: 60px;
    }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .section { padding: var(--space-md) 0; }
    .hide-mobile { display: none !important; }
}

@media (max-width: 480px) {
    .grid-3, .grid-2 { grid-template-columns: 1fr; }
    .toast-container { right: var(--space-md); left: var(--space-md); }
    .toast { min-width: auto; }
}