/* ============================================================================
   THE KINETIC CANTINA - Modern Muralist Design System
   Production CSS - Optimized for Performance & Accessibility
   ============================================================================ */

/* ============================================================================
   1. CSS CUSTOM PROPERTIES (Design Tokens)
   ============================================================================ */

:root {
    /* Typography Fonts */
    --font-headline: 'Epilogue', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;

    /* Color Palette */
    --color-primary: #ab2d00;
    --color-primary-container: #ff7851;
    --color-primary-dim: #962600;
    --color-secondary: #7b5400;
    --color-secondary-container: #ffc96f;
    --color-secondary-dim: #6b4900;
    --color-tertiary: #176a21;
    --color-tertiary-container: #9df197;
    --color-tertiary-dim: #025d16;

    /* Surfaces */
    --color-surface: #fcf6ed;
    --color-surface-bright: #fcf6ed;
    --color-surface-dim: #dad4c8;
    --color-surface-container: #ede7dd;
    --color-surface-container-low: #f6f0e6;
    --color-surface-container-high: #e8e2d7;
    --color-surface-container-highest: #e2dcd1;
    --color-surface-container-lowest: #ffffff;

    /* Text Colors */
    --color-on-surface: #312e29;
    --color-on-surface-variant: #5e5b54;
    --color-on-background: #312e29;
    --color-on-primary: #ffefec;
    --color-on-primary-container: #480d00;
    --color-on-secondary: #fff1df;
    --color-on-secondary-container: #614100;
    --color-on-tertiary: #d1ffc8;
    --color-on-tertiary-container: #005c15;

    /* Outlines */
    --color-outline: #7a766f;
    --color-outline-variant: #b1ada5;
    --color-background: #fcf6ed;

    /* Error Colors */
    --color-error: #b31b25;
    --color-error-container: #fb5151;
    --color-on-error: #ffefee;

    /* Spacing Scale (base unit: 4px) */
    --space-xs: 0.25rem;    /* 4px */
    --space-sm: 0.5rem;     /* 8px */
    --space-md: 1rem;       /* 16px */
    --space-lg: 1.5rem;     /* 24px */
    --space-xl: 2rem;       /* 32px */
    --space-xxl: 3rem;      /* 48px */
    --space-xxxl: 4rem;     /* 64px */
    --space-4xl: 5rem;      /* 80px */
    --space-5xl: 6rem;      /* 96px */

    /* Border Radius */
    --radius-sm: 0.25rem;   /* 4px */
    --radius-md: 0.75rem;   /* 12px */
    --radius-lg: 1rem;      /* 16px */
    --radius-xl: 1.5rem;    /* 24px */
    --radius-full: 9999px;

    /* Shadow System */
    --shadow-sm: 0 1px 2px rgba(171, 45, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(171, 45, 0, 0.08);
    --shadow-lg: 0 12px 32px rgba(171, 45, 0, 0.12);
    --shadow-xl: 0 20px 40px rgba(171, 45, 0, 0.15);
    --shadow-ambient: 0 0 40px rgba(171, 45, 0, 0.06);

    /* Typography Scale */
    --text-display-lg: 3.5rem;
    --text-display-md: 2.875rem;
    --text-headline-lg: 2rem;
    --text-headline-md: 1.75rem;
    --text-headline-sm: 1.5rem;
    --text-title-lg: 1.375rem;
    --text-title-md: 1.25rem;
    --text-title-sm: 1.0625rem;
    --text-body-lg: 1rem;
    --text-body-md: 0.875rem;
    --text-body-sm: 0.8125rem;
    --text-label-lg: 0.875rem;
    --text-label-md: 0.75rem;
    --text-label-sm: 0.6875rem;

    /* Z-index Stack */
    --z-base: 1;
    --z-dropdown: 100;
    --z-fixed: 1000;
    --z-modal: 10000;
}

/* ============================================================================
   2. GLOBAL STYLES & RESET
   ============================================================================ */

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-body-lg);
    line-height: 1.6;
    color: var(--color-on-surface);
    background-color: var(--color-surface);
    overflow-x: hidden;
}

/* ============================================================================
   3. TYPOGRAPHY
   ============================================================================ */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-headline);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
}

h1 {
    font-size: var(--text-display-lg);
}

h2 {
    font-size: var(--text-headline-lg);
}

h3 {
    font-size: var(--text-headline-sm);
}

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

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* ============================================================================
   4. HEADER & NAVIGATION
   ============================================================================ */

.header {
    position: sticky;
    top: 0;
    background: rgba(252, 246, 237, 0.95);
    backdrop-filter: blur(24px);
    border-bottom: 1px solid rgba(122, 118, 111, 0.1);
    z-index: var(--z-fixed);
    box-shadow: var(--shadow-sm);
}

.navbar {
    padding: var(--space-md) 0;
}

.navbar-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-xl);
}

.logo h1 {
    font-size: var(--text-title-lg);
    margin: 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-container) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--space-xl);
    flex: 1;
    justify-content: center;
}

.nav-links a {
    font-weight: 600;
    font-size: var(--text-body-md);
    color: var(--color-on-surface);
    position: relative;
    transition: color 0.3s ease;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width 0.3s ease;
}

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

.nav-links a:hover::after {
    width: 100%;
}

.nav-cta {
    white-space: nowrap;
}

/* ============================================================================
   5. HERO SECTION
   ============================================================================ */

.hero {
    background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-surface-container-low) 100%);
    padding: var(--space-5xl) var(--space-lg);
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 120, 81, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero-content {
    max-width: 800px;
    z-index: 1;
    animation: fadeInUp 0.8s ease-out;
}

.hero-subtitle {
    font-size: var(--text-label-lg);
    color: var(--color-secondary);
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: var(--space-md);
}

.hero-title {
    font-size: clamp(2rem, 5vw, var(--text-display-lg));
    color: var(--color-on-surface);
    margin-bottom: var(--space-xl);
    line-height: 1.1;
}

.hero-description {
    font-size: var(--text-body-lg);
    color: var(--color-on-surface-variant);
    margin-bottom: var(--space-xxl);
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================================================
   6. TRUST SECTION
   ============================================================================ */

.trust-section {
    background: var(--color-surface-container-low);
    padding: var(--space-xxxl) var(--space-lg);
    display: flex;
    justify-content: center;
    align-items: center;
}

.trust-card {
    background: var(--color-surface-container-lowest);
    padding: var(--space-xxxl) var(--space-5xl);
    border-radius: var(--radius-xl);
    text-align: center;
    max-width: 600px;
    box-shadow: var(--shadow-md);
}

.trust-card h3 {
    font-size: var(--text-headline-md);
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.trust-card p {
    font-size: var(--text-body-lg);
    color: var(--color-on-surface-variant);
    margin: 0;
}

/* ============================================================================
   7. MENU SECTION
   ============================================================================ */

.menu-section {
    background: var(--color-surface);
    padding: var(--space-5xl) var(--space-lg);
}

.section-header {
    max-width: 1280px;
    margin: 0 auto var(--space-4xl);
    text-align: center;
}

.section-header h2 {
    font-size: clamp(1.75rem, 4vw, var(--text-headline-lg));
    margin-bottom: var(--space-md);
}

.section-subtitle {
    font-size: var(--text-body-md);
    color: var(--color-on-surface-variant);
    margin: 0;
}

.menu-grid {
    max-width: 1280px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
}

.menu-card {
    background: var(--color-surface-container-lowest);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-sm);
}

.menu-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.card-image-placeholder {
    background: linear-gradient(135deg, var(--color-primary-container) 0%, var(--color-secondary-container) 100%);
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.card-image-placeholder::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.food-type {
    font-size: var(--text-label-lg);
    font-weight: 600;
    color: var(--color-on-primary);
    position: relative;
    z-index: 1;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.card-content {
    padding: var(--space-lg);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.card-header h3 {
    font-size: var(--text-title-md);
    margin: 0;
    color: var(--color-on-surface);
}

.price {
    font-size: var(--text-title-md);
    font-weight: 700;
    color: var(--color-primary);
    font-family: var(--font-headline);
    white-space: nowrap;
}

.card-description {
    font-size: var(--text-body-md);
    color: var(--color-on-surface-variant);
    line-height: 1.6;
    margin-bottom: var(--space-md);
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.tag {
    display: inline-block;
    background: var(--color-secondary-container);
    color: var(--color-on-secondary-container);
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: var(--text-label-md);
    font-weight: 600;
}

/* ============================================================================
   8. SPICE LEVEL SECTION
   ============================================================================ */

.spice-section {
    background: var(--color-surface-container-low);
    padding: var(--space-5xl) var(--space-lg);
    text-align: center;
}

.spice-section .section-header {
    margin-bottom: var(--space-4xl);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
}

.fire-icon {
    font-size: 2rem;
    animation: flicker 2s ease-in-out infinite;
}

.spice-levels {
    max-width: 1280px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-xl);
}

.spice-level {
    background: var(--color-surface-container-highest);
    padding: var(--space-xxl);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    position: relative;
}

.spice-level:hover {
    background: var(--color-surface-container-lowest);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.spice-level.active {
    background: var(--color-primary-container);
    color: var(--color-on-primary);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-ambient);
}

.spice-level.active span {
    color: var(--color-on-primary);
    font-weight: 700;
}

.spice-level span {
    font-size: var(--text-title-sm);
    font-weight: 600;
    display: block;
    color: var(--color-on-surface);
}

/* ============================================================================
   9. CULTURE SECTION
   ============================================================================ */

.culture-section {
    background: linear-gradient(135deg, var(--color-secondary-container) 0%, var(--color-tertiary-container) 100%);
    padding: var(--space-5xl) var(--space-lg);
    text-align: center;
    position: relative;
}

.culture-section .section-header {
    color: var(--color-on-secondary-container);
}

.culture-section h2 {
    color: var(--color-on-secondary-container);
}

.culture-section p {
    color: rgba(0, 0, 0, 0.7);
}

.secondary-button {
    background: var(--color-surface-container-lowest);
    color: var(--color-primary);
    padding: var(--space-md) var(--space-xl);
    border: none;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: var(--text-label-lg);
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: var(--space-lg);
}

.secondary-button:hover {
    background: var(--color-on-secondary-container);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ============================================================================
   10. LOCATIONS SECTION
   ============================================================================ */

.locations-section {
    background: var(--color-surface);
    padding: var(--space-5xl) var(--space-lg);
}

.locations-grid {
    max-width: 1280px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-xl);
}

.location-card {
    background: var(--color-surface-container-lowest);
    padding: var(--space-xxl);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

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

.location-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
    display: inline-block;
}

.location-card h3 {
    font-size: var(--text-title-md);
    margin-bottom: var(--space-md);
    color: var(--color-primary);
}

.location-card p {
    font-size: var(--text-body-md);
    color: var(--color-on-surface-variant);
    margin: 0;
    line-height: 1.8;
}

.location-link {
    color: var(--color-primary);
    font-weight: 600;
    text-decoration: underline;
}

.location-link:hover {
    color: var(--color-primary-container);
}

/* ============================================================================
   11. FOOTER
   ============================================================================ */

.footer {
    background: var(--color-surface-container);
    padding: var(--space-4xl) var(--space-lg);
    margin-top: var(--space-5xl);
    position: relative;
}

.footer-container {
    max-width: 1280px;
    margin: 0 auto var(--space-xxl);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4xl);
}

.footer-brand h3 {
    font-size: var(--text-title-lg);
    margin-bottom: var(--space-md);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-container) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-brand p {
    font-size: var(--text-body-md);
    color: var(--color-on-surface-variant);
    margin: 0;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xl);
}

.footer-links a {
    font-weight: 600;
    color: var(--color-on-surface);
    font-size: var(--text-body-md);
    transition: color 0.3s ease;
}

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

.whatsapp-cta {
    text-align: center;
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-outline-variant);
}

.whatsapp-button {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-container) 100%);
    color: var(--color-on-primary);
    border: none;
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: var(--text-label-lg);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    transition: all 0.3s ease;
}

.whatsapp-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.whatsapp-button:active {
    transform: translateY(0);
}

/* ============================================================================
   12. BUTTON STYLES
   ============================================================================ */

.cta-button {
    padding: var(--space-md) var(--space-xl);
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: var(--text-label-lg);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: var(--font-body);
}

.cta-button.primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-container) 100%);
    color: var(--color-on-primary);
}

.cta-button.primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.cta-button.primary:active {
    transform: translateY(0);
}

.cta-button.secondary {
    background: var(--color-surface-container-highest);
    color: var(--color-on-surface);
    border: 2px solid var(--color-outline-variant);
}

.cta-button.secondary:hover {
    background: var(--color-surface-container-lowest);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* ============================================================================
   13. ANIMATIONS
   ============================================================================ */

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

@keyframes flicker {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

/* ============================================================================
   14. RESPONSIVE DESIGN
   ============================================================================ */

@media (max-width: 768px) {
    :root {
        --space-4xl: 3rem;
        --space-5xl: 4rem;
        --text-display-lg: 2.5rem;
        --text-headline-lg: 1.5rem;
    }

    .navbar-container {
        flex-direction: column;
        gap: var(--space-md);
    }

    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--space-md);
    }

    .hero {
        padding: var(--space-4xl) var(--space-lg);
        min-height: 50vh;
    }

    .hero-actions {
        flex-direction: column;
    }

    .cta-button {
        width: 100%;
    }

    .footer-container {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .trust-card {
        padding: var(--space-xl) var(--space-lg);
    }

    .menu-grid {
        grid-template-columns: 1fr;
    }

    .locations-grid {
        grid-template-columns: 1fr;
    }

    .spice-levels {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    body {
        font-size: var(--text-body-md);
    }

    .navbar-container {
        padding: 0 var(--space-md);
    }

    .logo h1 {
        font-size: var(--text-title-md);
    }

    .nav-links {
        display: none;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .hero-description {
        font-size: var(--text-body-md);
    }

    .section-header h2 {
        font-size: 1.5rem;
    }

    .menu-grid {
        gap: var(--space-md);
    }

    .card-header {
        flex-direction: column;
    }
}

/* ============================================================================
   15. ACCESSIBILITY & PERFORMANCE
   ============================================================================ */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Focus styles for keyboard navigation */
.nav-links a:focus,
.cta-button:focus,
.whatsapp-button:focus,
.secondary-button:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .header,
    .footer,
    .nav-cta,
    .hero-actions,
    .whatsapp-cta {
        display: none;
    }

    body {
        background: white;
    }

    .menu-card {
        page-break-inside: avoid;
    }
}