/*
Theme Name: ArtFlow by Ars Divina
Theme URI: https://arsdivina.com/artflow
Author: Ars Divina
Author URI: https://arsdivina.com
Description: A premium WordPress theme designed for hand-painted art reproduction businesses. Built to work seamlessly with the ArtMaster Pro plugin and WooCommerce. Museum-quality aesthetic with Ars Divina branding.
Version: 1.0.0
Tested up to: 6.4
Requires at least: 6.0
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: artflow
Tags: e-commerce, woocommerce, custom-background, custom-logo, custom-menu, featured-images, theme-options, translation-ready

ArtFlow by Ars Divina is a gallery-inspired theme that creates an elegant, art-focused shopping experience.
*/

/* ==========================================================================
   CSS Custom Properties (Design Tokens)
   ========================================================================== */

:root {
    /* Colors - Ars Divina Brand Palette */
    --color-canvas: #faf8f5;
    --color-cream: #f5f1eb;
    --color-ivory: #fffff0;
    --color-charcoal: #2C2C2C;
    --color-charcoal-light: #4a4a4a;
    --color-gold: #B8860B;
    --color-gold-dark: #9A7209;
    --color-gold-light: #D4A84B;
    --color-burgundy: #800020;
    --color-burgundy-light: #9A1A3A;
    --color-forest: #2d4a3e;

    /* Functional Colors */
    --color-primary: var(--color-gold);
    --color-primary-hover: var(--color-gold-dark);
    --color-secondary: var(--color-charcoal);
    --color-success: #4a7c59;
    --color-warning: #d4a574;
    --color-error: #a94442;
    --color-info: #5b7a91;

    /* Text Colors */
    --color-text: var(--color-charcoal);
    --color-text-light: #666666;
    --color-text-muted: #888888;
    --color-text-inverse: #ffffff;

    /* Background Colors */
    --color-bg: #ffffff;
    --color-bg-alt: var(--color-canvas);
    --color-bg-dark: var(--color-charcoal);

    /* Border Colors */
    --color-border: #e0e0e0;
    --color-border-light: #f0f0f0;

    /* Typography */
    --font-heading: 'Playfair Display', 'Georgia', serif;
    --font-body: 'Source Sans Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-accent: 'Cormorant Garamond', 'Georgia', serif;

    /* Font Sizes - Fluid Scale */
    --fs-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
    --fs-sm: clamp(0.875rem, 0.8rem + 0.3vw, 1rem);
    --fs-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
    --fs-lg: clamp(1.125rem, 1rem + 0.5vw, 1.375rem);
    --fs-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.75rem);
    --fs-2xl: clamp(1.5rem, 1.25rem + 1.25vw, 2.5rem);
    --fs-3xl: clamp(2rem, 1.5rem + 2.5vw, 3.5rem);
    --fs-display: clamp(2.5rem, 2rem + 2.5vw, 4.5rem);

    /* Font Weights */
    --fw-normal: 400;
    --fw-medium: 500;
    --fw-semibold: 600;
    --fw-bold: 700;

    /* Line Heights */
    --lh-tight: 1.2;
    --lh-snug: 1.375;
    --lh-normal: 1.5;
    --lh-relaxed: 1.625;

    /* Spacing Scale */
    --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;

    /* Container */
    --container-sm: 640px;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1280px;
    --container-2xl: 1440px;
    --container-padding: clamp(1rem, 2vw, 2rem);

    /* Border Radius */
    --radius-sm: 2px;
    --radius-md: 4px;
    --radius-lg: 8px;
    --radius-xl: 12px;
    --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);
    --shadow-frame: 0 4px 6px rgba(0, 0, 0, 0.1), inset 0 2px 4px rgba(255, 255, 255, 0.1);

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

    /* Z-Index Scale */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-overlay: 400;
    --z-modal: 500;
    --z-toast: 600;
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root.auto-dark {
        --color-bg: #1a1a1a;
        --color-bg-alt: #2a2a2a;
        --color-text: #f0f0f0;
        --color-text-light: #cccccc;
        --color-border: #3a3a3a;
    }
}

/* ==========================================================================
   Base Styles
   ========================================================================== */

*,
*::before,
*::after {
    box-sizing: border-box;
}

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

body {
    margin: 0;
    font-family: var(--font-body);
    font-size: var(--fs-base);
    line-height: var(--lh-normal);
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: var(--fw-bold);
    line-height: var(--lh-tight);
    margin-top: 0;
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

h1 { font-size: var(--fs-3xl); }
h2 { font-size: var(--fs-2xl); }
h3 { font-size: var(--fs-xl); }
h4 { font-size: var(--fs-lg); }
h5 { font-size: var(--fs-base); }
h6 { font-size: var(--fs-sm); }

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

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

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

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

/* ==========================================================================
   Layout
   ========================================================================== */

.artflow-container {
    width: 100%;
    max-width: var(--container-xl);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

.artflow-container--narrow {
    max-width: var(--container-md);
}

.artflow-container--wide {
    max-width: var(--container-2xl);
}

.artflow-section {
    padding-top: var(--space-3xl);
    padding-bottom: var(--space-3xl);
}

.artflow-section--alt {
    background-color: var(--color-bg-alt);
}

.artflow-section__title {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.artflow-section__subtitle {
    font-family: var(--font-accent);
    font-size: var(--fs-lg);
    color: var(--color-text-light);
    text-align: center;
    margin-top: calc(var(--space-md) * -1);
    margin-bottom: var(--space-2xl);
}

/* Grid System */
.artflow-grid {
    display: grid;
    gap: var(--space-lg);
}

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

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

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

@media (max-width: 1023px) {
    .artflow-grid--4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 767px) {
    .artflow-grid--2,
    .artflow-grid--3,
    .artflow-grid--4 {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   Components
   ========================================================================== */

/* Buttons */
.artflow-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    font-family: var(--font-body);
    font-size: var(--fs-base);
    font-weight: var(--fw-semibold);
    line-height: 1.5;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.artflow-btn--primary {
    background-color: var(--color-primary);
    color: var(--color-text-inverse);
    border-color: var(--color-primary);
}

.artflow-btn--primary:hover {
    background-color: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    color: var(--color-text-inverse);
}

.artflow-btn--secondary {
    background-color: var(--color-secondary);
    color: var(--color-text-inverse);
    border-color: var(--color-secondary);
}

.artflow-btn--secondary:hover {
    background-color: var(--color-charcoal-light);
    border-color: var(--color-charcoal-light);
    color: var(--color-text-inverse);
}

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

.artflow-btn--outline:hover {
    background-color: var(--color-primary);
    color: var(--color-text-inverse);
}

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

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

.artflow-btn--full {
    width: 100%;
}

/* Cards */
.artflow-card {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.artflow-card__image {
    position: relative;
    overflow: hidden;
}

.artflow-card__image img {
    width: 100%;
    height: auto;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.artflow-card:hover .artflow-card__image img {
    transform: scale(1.05);
}

.artflow-card__content {
    padding: var(--space-lg);
}

.artflow-card__title {
    font-size: var(--fs-lg);
    margin-bottom: var(--space-sm);
}

.artflow-card__meta {
    font-size: var(--fs-sm);
    color: var(--color-text-muted);
}

/* Forms */
.artflow-form-group {
    margin-bottom: var(--space-lg);
}

.artflow-label {
    display: block;
    margin-bottom: var(--space-xs);
    font-weight: var(--fw-medium);
    font-size: var(--fs-sm);
}

.artflow-input,
.artflow-select,
.artflow-textarea {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    font-family: var(--font-body);
    font-size: var(--fs-base);
    line-height: 1.5;
    color: var(--color-text);
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.artflow-input:focus,
.artflow-select:focus,
.artflow-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(201, 169, 98, 0.1);
}

/* Badge */
.artflow-badge {
    display: inline-block;
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--fs-xs);
    font-weight: var(--fw-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-sm);
}

.artflow-badge--primary {
    background-color: var(--color-primary);
    color: var(--color-text-inverse);
}

.artflow-badge--success {
    background-color: var(--color-success);
    color: var(--color-text-inverse);
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */

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

.font-heading { font-family: var(--font-heading); }
.font-accent { font-family: var(--font-accent); }

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

.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.mt-lg { margin-top: var(--space-lg); }
.mb-lg { margin-bottom: var(--space-lg); }

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