/* =============================================================
   public/css/app.css — Sebastortas Menú Digital
   Glassmorphism dark theme con animated gradient background
   ============================================================= */

/* ── Design Tokens ── */
:root {
    --primary:          #D91A3D;
    --primary-dark:     #b8152f;
    --secondary:        #024873;
    --glass-bg:         rgba(255, 255, 255, 0.12);
    --glass-border:     rgba(255, 255, 255, 0.25);
    --text-light:       #ffffff;
    --text-muted:       rgba(255, 255, 255, 0.8);
    --bg-dark:          #1a1a2e;

    /* Z-index scale */
    --z-base:     1;
    --z-sticky:   100;
    --z-overlay:  200;
    --z-modal:    300;

    /* Spacing scale */
    --space-xs:   4px;
    --space-sm:   8px;
    --space-md:   16px;
    --space-lg:   24px;
    --space-xl:   32px;

    /* Touch target minimum */
    --touch-min: 44px;

    /* Animation timing */
    --transition-fast:   150ms;
    --transition-normal: 250ms;
    --transition-slow:   350ms;
    --easing: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

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

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 16px;
    line-height: 1.5;
    color: var(--text-light);
    background: var(--bg-dark);
    min-height: 100vh;
    padding-bottom: 100px;
    overflow-x: hidden;
    -webkit-tap-highlight-color: transparent;
    -webkit-font-smoothing: antialiased;
}

/* ── Animated Background ── */
.animated-bg {
    position: fixed;
    inset: 0;
    background: linear-gradient(-45deg, #024873, #0a0a1a, #D91A3D, #1a1a2e, #024873);
    background-size: 400% 400%;
    animation: gradientFlow 20s ease-in-out infinite;
    z-index: -1;
}

.animated-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 30% 20%, rgba(217, 26, 61, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 80%, rgba(2, 72, 115, 0.2)   0%, transparent 50%);
    animation: pulseGlow 8s ease-in-out infinite alternate;
}

@keyframes gradientFlow {
    0%,100% { background-position: 0% 50%; }
    25%      { background-position: 50% 100%; }
    50%      { background-position: 100% 50%; }
    75%      { background-position: 50% 0%; }
}
@keyframes pulseGlow {
    0%   { opacity: 0.5; }
    100% { opacity: 1; }
}

/* ── Header ── */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: var(--space-md) var(--space-lg);
    text-align: center;
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    box-shadow: 0 4px 30px rgba(0,0,0,0.1);
    border-bottom: 1px solid rgba(255,255,255,0.3);
}

.header__title {
    color: var(--primary);
    font-size: clamp(1.4rem, 5vw, 1.8rem);
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: -0.5px;
}

.header__subtitle {
    font-size: 0.875rem;
    color: var(--secondary);
    margin-top: var(--space-xs);
    font-weight: 500;
}

/* ── Category Nav ── */
.category-nav {
    position: sticky;
    top: 72px;
    z-index: calc(var(--z-sticky) - 1);
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    padding: var(--space-sm) 0;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    -webkit-overflow-scrolling: touch;
}
.category-nav::-webkit-scrollbar { display: none; }

.nav-container {
    display: flex;
    gap: var(--space-sm);
    padding: 0 var(--space-md);
    width: max-content;
}

.nav-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    min-height: var(--touch-min);
    min-width: var(--touch-min);
    padding: 10px 18px;
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 600;
    color: white;
    cursor: pointer;
    text-decoration: none;
    white-space: nowrap;
    transition: all var(--transition-normal) var(--easing);
}
.nav-pill:hover,
.nav-pill:focus-visible { background: rgba(255,255,255,0.3); outline: none; }
.nav-pill:focus-visible  { box-shadow: 0 0 0 3px rgba(217,26,61,0.5); }
.nav-pill.active {
    background: var(--primary);
    border-color: var(--primary);
    box-shadow: 0 4px 15px rgba(217,26,61,0.4);
}

/* ── Main Container ── */
.main-container {
    padding: var(--space-lg) var(--space-md);
    max-width: 1200px;
    margin: 0 auto;
}

/* ── Category Section ── */
.category-section {
    margin-bottom: var(--space-xl);
    scroll-margin-top: 150px;
}

.category-title {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    color: var(--secondary);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    padding: 14px 20px;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    border-left: 4px solid var(--primary);
}

.category-icon { font-size: 1.3rem; }

/* ── Menu Grid ── */
.menu-grid {
    display: grid;
    gap: var(--space-sm);
    grid-template-columns: repeat(2, 1fr);
}
@media (min-width: 768px)  { .menu-grid { grid-template-columns: repeat(3, 1fr); gap: var(--space-md); } }
@media (min-width: 1024px) { .menu-grid { grid-template-columns: repeat(4, 1fr); gap: var(--space-lg); } }

/* ── Card ── */
.card {
    position: relative;
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: var(--space-md);
    min-height: var(--touch-min);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    transition:
        transform     var(--transition-normal) var(--easing),
        box-shadow    var(--transition-normal) var(--easing),
        border-color  var(--transition-normal) var(--easing);
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, transparent 60%);
    pointer-events: none;
}

.card:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(217,26,61,0.5); }
.card:active        { transform: scale(0.97); }

.card.selected {
    background: rgba(255,255,255,0.25);
    border: 2px solid var(--primary);
    box-shadow: 0 0 30px rgba(217,26,61,0.35);
}

@media (min-width: 1024px) {
    .card:hover {
        transform: translateY(-4px);
        box-shadow: 0 12px 40px rgba(0,0,0,0.2);
    }
}

.card__title { font-size: 1rem;   color: white; font-weight: 600; line-height: 1.3; }
.card__desc  { font-size: 0.875rem; color: var(--text-muted); line-height: 1.4; }

.card__price {
    display: inline-flex;
    align-items: center;
    background: var(--primary);
    color: white;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 700;
    margin-top: auto;
    width: fit-content;
    box-shadow: 0 2px 8px rgba(217,26,61,0.3);
}

.card__tag {
    display: inline-flex;
    background: rgba(2,72,115,0.8);
    color: white;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

.card__check {
    position: absolute;
    top: 10px; right: 10px;
    width: 26px; height: 26px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    opacity: 0;
    transform: scale(0);
    transition: all var(--transition-normal) var(--easing);
    z-index: 10;
}
.card.selected .card__check { opacity: 1; transform: scale(1); }

/* ── Checkout (Step 2) ── */
.checkout {
    display: none;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    min-height: 80vh;
    padding: var(--space-xl) var(--space-lg) 120px;
    max-width: 700px;
    margin: var(--space-lg) auto;
    border-radius: 24px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}
.checkout.active {
    display: block;
    animation: slideUp var(--transition-slow) var(--easing);
}
.checkout__title {
    color: var(--primary);
    text-align: center;
    margin-bottom: var(--space-lg);
    font-size: 1.4rem;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(30px); }
    to   { opacity: 1; transform: translateY(0); }
}

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

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--secondary);
}

.form-input {
    width: 100%;
    min-height: var(--touch-min);
    padding: 14px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 14px;
    font-family: inherit;
    font-size: 1rem;
    background: #f8f9fa;
    color: #333;
    transition: all var(--transition-normal) var(--easing);
}
.form-input:focus {
    border-color: var(--primary);
    background: #fff;
    outline: none;
    box-shadow: 0 0 0 4px rgba(217,26,61,0.1);
}
.form-input::placeholder { color: #999; }

/* ── Order Summary ── */
.order-summary {
    background: linear-gradient(135deg, #f0f4f8 0%, #e8ecf0 100%);
    padding: var(--space-lg);
    border-radius: 16px;
    margin-bottom: var(--space-lg);
    border-left: 5px solid var(--primary);
}
.order-summary__title { font-size: 1rem; margin-bottom: var(--space-sm); color: var(--secondary); }

.summary-list { list-style: none; }
.summary-list li {
    margin-bottom: var(--space-sm);
    font-size: 0.9rem;
    border-bottom: 1px dashed #ccc;
    padding-bottom: var(--space-sm);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: #444;
}
.summary-list li::before { content: '✓'; color: var(--primary); font-weight: bold; }

/* ── Suggestions ── */
.suggestions {
    background: linear-gradient(135deg, #fff8e1 0%, #ffecb3 100%);
    border: 2px solid #ffc107;
    border-radius: 16px;
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
    text-align: center;
}
.suggestions.hidden { display: none; }
.suggestions__title { color: #f57c00; font-size: 1rem; margin-bottom: var(--space-sm); }
.suggestions__text  { color: #5d4037; font-size: 0.9rem; margin-bottom: var(--space-md); line-height: 1.5; }

.btn-suggestion {
    background: linear-gradient(135deg, #ff9800 0%, #f57c00 100%);
    color: white;
    border: none;
    min-height: var(--touch-min);
    padding: 12px 24px;
    border-radius: 25px;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform var(--transition-fast) var(--easing);
}
.btn-suggestion:active { transform: scale(0.97); }

/* ── Floating Bar ── */
.floating-bar {
    position: fixed;
    bottom: 0; left: 0; right: 0;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    padding: var(--space-md) var(--space-lg);
    padding-bottom: max(var(--space-md), env(safe-area-inset-bottom));
    box-shadow: 0 -5px 30px rgba(0,0,0,0.15);
    display: flex;
    gap: var(--space-sm);
    z-index: var(--z-overlay);
}

.btn {
    min-height: var(--touch-min);
    padding: 16px 20px;
    border: none;
    border-radius: 16px;
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    font-family: inherit;
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    transition: transform var(--transition-fast) var(--easing);
}
.btn:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(217,26,61,0.5); }

.btn--primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(217,26,61,0.35);
}
.btn--primary:active { transform: scale(0.98); }

.btn--secondary {
    background: white;
    color: var(--secondary);
    border: 2px solid var(--secondary);
    flex: 0 0 56px;
    font-size: 1.3rem;
}

.btn--whatsapp {
    background: linear-gradient(135deg, #25d366 0%, #128c7e 100%);
    box-shadow: 0 4px 15px rgba(37,211,102,0.35);
}

.cart-badge {
    background: white;
    color: var(--primary);
    font-size: 0.8rem;
    font-weight: 800;
    padding: 2px 8px;
    border-radius: 12px;
    animation: badgePop var(--transition-normal) var(--easing);
}
@keyframes badgePop {
    0%   { transform: scale(0); }
    70%  { transform: scale(1.2); }
    100% { transform: scale(1); }
}

/* ── Utilities ── */
.hidden { display: none !important; }
.sr-only {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    border: 0;
}