/* ============================================================
   Mammmà DPP — Design System Unificato
   Palette: Burgundy + Gold + Warm Neutrals
   Mobile-first, un solo framework CSS
   ============================================================ */

/* --- VARIABILI CSS --- */
:root {
    /* Colori primari */
    --color-burgundy: #8B0000;
    --color-burgundy-dark: #6B0000;
    --color-burgundy-light: #A52A2A;
    --color-gold: #DAA520;
    --color-gold-light: #F0C850;
    --color-gold-dark: #B8860B;

    /* Sfondo e testi */
    --color-bg: #FDFBF7;
    --color-bg-secondary: #F5F0E8;
    --color-bg-card: #FFFFFF;
    --color-text: #2D2D2D;
    --color-text-light: #6B6B6B;
    --color-text-muted: #999999;

    /* Semantici */
    --color-success: #2E7D32;
    --color-warning: #F9A825;
    --color-error: #C62828;
    --color-info: #1565C0;

    /* Admin */
    --color-admin-bg: #1a1a2e;
    --color-admin-sidebar: #16213e;
    --color-admin-card: #0f3460;
    --color-admin-accent: #e94560;
    --color-admin-text: #E0E0E0;

    /* Tipografia */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-heading: 'Playfair Display', Georgia, 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;

    /* Border radius */
    --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 rgba(0,0,0,0.07);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px rgba(0,0,0,0.15);

    /* Transition */
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-main);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

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

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

a:hover {
    color: var(--color-burgundy-dark);
}

/* --- TIPOGRAFIA --- */
h1, h2, h3, h4 {
    font-family: var(--font-heading);
    line-height: 1.2;
    color: var(--color-text);
}

h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); }
h2 { font-size: clamp(1.4rem, 3vw, 2.2rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
h4 { font-size: 1.1rem; }

/* --- LAYOUT --- */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

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

.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }
.grid-4 { grid-template-columns: 1fr; }

@media (min-width: 640px) {
    .grid-2 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
    .grid-3 { grid-template-columns: repeat(3, 1fr); }
    .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

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

.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.py-xl { padding-top: var(--space-xl); padding-bottom: var(--space-xl); }
.py-2xl { padding-top: var(--space-2xl); padding-bottom: var(--space-2xl); }
.py-3xl { padding-top: var(--space-3xl); padding-bottom: var(--space-3xl); }

/* --- NAVBAR --- */
.navbar {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: var(--space-sm) 0;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar-logo {
    height: 40px;
    width: auto;
}

.navbar-links {
    display: none;
    list-style: none;
    gap: var(--space-lg);
}

.navbar-links a {
    color: var(--color-text);
    font-weight: 500;
    font-size: 0.95rem;
    padding: var(--space-xs) 0;
    border-bottom: 2px solid transparent;
}

.navbar-links a:hover,
.navbar-links a.active {
    color: var(--color-burgundy);
    border-bottom-color: var(--color-gold);
}

.navbar-toggle {
    display: flex;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-text);
    padding: var(--space-xs);
}

@media (min-width: 768px) {
    .navbar-links {
        display: flex;
    }
    .navbar-toggle {
        display: none;
    }
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255,255,255,0.98);
    z-index: 200;
    flex-direction: column;
    padding: var(--space-xl);
}

.mobile-menu.open {
    display: flex;
}

.mobile-menu-close {
    align-self: flex-end;
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--color-text);
}

.mobile-menu a {
    display: block;
    padding: var(--space-md) 0;
    font-size: 1.2rem;
    color: var(--color-text);
    border-bottom: 1px solid var(--color-bg-secondary);
}

/* --- HERO --- */
.hero {
    background: linear-gradient(135deg, var(--color-burgundy) 0%, var(--color-burgundy-dark) 100%);
    color: white;
    padding: var(--space-3xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 60%;
    height: 200%;
    background: radial-gradient(circle, rgba(218,165,32,0.15) 0%, transparent 70%);
    pointer-events: none;
}

.hero h1 {
    color: white;
    margin-bottom: var(--space-md);
    font-size: clamp(2rem, 5vw, 3.2rem);
}

.hero p {
    font-size: clamp(1rem, 2vw, 1.2rem);
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto var(--space-lg);
}

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

.card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-2px);
}

.card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

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

.card-title {
    font-size: 1.1rem;
    margin-bottom: var(--space-sm);
}

.card-text {
    color: var(--color-text-light);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* --- BOTTONI --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: 0.6rem 1.4rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.95rem;
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    font-family: var(--font-main);
}

.btn-primary {
    background: var(--color-burgundy);
    color: white;
}

.btn-primary:hover {
    background: var(--color-burgundy-dark);
    color: white;
}

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

.btn-gold:hover {
    background: var(--color-gold-dark);
    color: white;
}

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

.btn-outline:hover {
    background: var(--color-burgundy);
    color: white;
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
}

.btn-success { background: var(--color-success); color: white; }
.btn-danger { background: var(--color-error); color: white; }
.btn-warning { background: var(--color-warning); color: var(--color-text); }

/* --- BADGE --- */
.badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-success { background: #E8F5E9; color: var(--color-success); }
.badge-warning { background: #FFF8E1; color: #F57F17; }
.badge-error { background: #FFEBEE; color: var(--color-error); }
.badge-info { background: #E3F2FD; color: var(--color-info); }
.badge-draft { background: #F3E5F5; color: #7B1FA2; }

/* --- FORM --- */
.form-group {
    margin-bottom: var(--space-md);
}

.form-label {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: var(--space-xs);
    color: var(--color-text);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.6rem 0.8rem;
    border: 1px solid #DDD;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-family: var(--font-main);
    transition: var(--transition);
    background: white;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-burgundy);
    box-shadow: 0 0 0 3px rgba(139,0,0,0.1);
}

.form-textarea {
    min-height: 100px;
    resize: vertical;
}

.form-error {
    color: var(--color-error);
    font-size: 0.8rem;
    margin-top: var(--space-xs);
}

/* --- TABELLA --- */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.table {
    width: 100%;
    border-collapse: collapse;
    background: white;
}

.table th {
    background: var(--color-bg-secondary);
    padding: 0.8rem 1rem;
    text-align: left;
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-text-light);
}

.table td {
    padding: 0.8rem 1rem;
    border-bottom: 1px solid #F0F0F0;
    font-size: 0.9rem;
}

.table tr:hover {
    background: var(--color-bg-secondary);
}

/* --- ALERT --- */
.alert {
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
    font-size: 0.9rem;
    border-left: 4px solid;
}

.alert-success { background: #E8F5E9; border-color: var(--color-success); color: var(--color-success); }
.alert-error { background: #FFEBEE; border-color: var(--color-error); color: var(--color-error); }
.alert-warning { background: #FFF8E1; border-color: var(--color-warning); color: #E65100; }
.alert-info { background: #E3F2FD; border-color: var(--color-info); color: var(--color-info); }

/* --- BLOCKCHAIN SECTION --- */
.blockchain-card {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: white;
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
}

.blockchain-card h3 { color: var(--color-gold); }

.hash-display {
    background: rgba(0,0,0,0.3);
    border: 1px solid rgba(218,165,32,0.3);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    font-family: 'Courier New', monospace;
    font-size: 0.8rem;
    word-break: break-all;
    color: #66BB6A;
}

.verified-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    background: rgba(46,125,50,0.2);
    color: #66BB6A;
    padding: 0.3rem 0.8rem;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
}

/* --- FOOTER --- */
.footer {
    background: var(--color-text);
    color: rgba(255,255,255,0.7);
    padding: var(--space-2xl) 0 var(--space-lg);
    margin-top: var(--space-3xl);
}

.footer a {
    color: var(--color-gold-light);
}

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

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

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr;
    }
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: var(--space-md);
    font-size: 0.85rem;
    text-align: center;
}

/* --- SEZIONI --- */
.section {
    padding: var(--space-3xl) 0;
}

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

.section-title h2 {
    color: var(--color-burgundy);
    margin-bottom: var(--space-sm);
}

.section-title p {
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* --- DPP Product Page --- */
.product-hero {
    background: linear-gradient(135deg, var(--color-burgundy) 0%, #4A0000 100%);
    color: white;
    padding: var(--space-2xl) 0;
}

.product-image {
    width: 280px;
    height: 280px;
    object-fit: contain;
    border-radius: var(--radius-lg);
    background: white;
    padding: var(--space-md);
    box-shadow: var(--shadow-xl);
}

.product-meta {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--space-sm);
}

.meta-item {
    background: rgba(255,255,255,0.1);
    border-radius: var(--radius-md);
    padding: var(--space-sm) var(--space-md);
}

.meta-item .label {
    font-size: 0.75rem;
    text-transform: uppercase;
    opacity: 0.7;
    letter-spacing: 0.5px;
}

.meta-item .value {
    font-weight: 600;
    font-size: 0.95rem;
}

/* --- VERIFY PAGE --- */
.verify-form {
    max-width: 600px;
    margin: 0 auto;
    background: white;
    padding: var(--space-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

/* --- SEARCH --- */
.search-box {
    display: flex;
    max-width: 500px;
    margin: 0 auto;
    background: white;
    border-radius: var(--radius-full);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.search-box input {
    flex: 1;
    border: none;
    padding: 0.8rem 1.2rem;
    font-size: 1rem;
    outline: none;
}

.search-box button {
    padding: 0.8rem 1.5rem;
    background: var(--color-gold);
    border: none;
    color: var(--color-text);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.search-box button:hover {
    background: var(--color-gold-dark);
    color: white;
}

/* --- ADMIN LAYOUT --- */
.admin-layout {
    display: flex;
    min-height: 100vh;
    background: var(--color-admin-bg);
    color: var(--color-admin-text);
}

.admin-sidebar {
    width: 250px;
    background: var(--color-admin-sidebar);
    padding: var(--space-lg);
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    overflow-y: auto;
    z-index: 50;
    transition: var(--transition);
}

.admin-sidebar-logo {
    height: 35px;
    margin-bottom: var(--space-xl);
}

.admin-nav a {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 0.6rem var(--space-md);
    color: var(--color-admin-text);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    margin-bottom: 2px;
}

.admin-nav a:hover,
.admin-nav a.active {
    background: rgba(233,69,96,0.15);
    color: var(--color-admin-accent);
}

.admin-main {
    flex: 1;
    margin-left: 250px;
    padding: var(--space-xl);
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-xl);
}

.admin-card {
    background: var(--color-admin-card);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
}

.stat-card {
    background: rgba(255,255,255,0.05);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    text-align: center;
    border: 1px solid rgba(255,255,255,0.08);
}

.stat-card .stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-gold);
    line-height: 1;
}

.stat-card .stat-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
}

/* --- LOGIN --- */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-burgundy) 0%, #2D0000 100%);
}

.login-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    width: 100%;
    max-width: 400px;
    box-shadow: var(--shadow-xl);
}

.login-card h2 {
    text-align: center;
    color: var(--color-burgundy);
    margin-bottom: var(--space-xl);
}

/* --- QR Code --- */
.qr-wrapper {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    display: inline-block;
    box-shadow: var(--shadow-md);
}

.qr-wrapper img {
    width: 200px;
    height: 200px;
}

/* --- RESPONSIVE ADMIN --- */
@media (max-width: 768px) {
    .admin-sidebar {
        transform: translateX(-100%);
    }
    .admin-sidebar.open {
        transform: translateX(0);
    }
    .admin-main {
        margin-left: 0;
    }
}

/* --- PAGINATION --- */
.pagination {
    display: flex;
    justify-content: center;
    gap: var(--space-xs);
    margin-top: var(--space-xl);
}

.pagination a,
.pagination span {
    padding: 0.4rem 0.8rem;
    border-radius: var(--radius-md);
    border: 1px solid #DDD;
    font-size: 0.9rem;
}

.pagination a:hover {
    background: var(--color-burgundy);
    color: white;
    border-color: var(--color-burgundy);
}

.pagination .active {
    background: var(--color-burgundy);
    color: white;
    border-color: var(--color-burgundy);
}

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

.animate-fade-in {
    animation: fadeInUp 0.6s ease forwards;
}

.animate-delay-1 { animation-delay: 0.1s; opacity: 0; }
.animate-delay-2 { animation-delay: 0.2s; opacity: 0; }
.animate-delay-3 { animation-delay: 0.3s; opacity: 0; }
.animate-delay-4 { animation-delay: 0.4s; opacity: 0; }

/* --- VISUALLY HIDDEN (a11y) --- */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    border: 0;
}