/* ============================================
   RESET E VARIABILI GLOBALI
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --danger-color: #ef4444;
    --success-color: #22c55e;
    --warning-color: #f59e0b;
    --dark-bg: #0f172a;
    --card-bg: #1e293b;
    --border-color: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --admin-color: #ec4899;
    --user-color: #06b6d4;
}

html, body {
    height: 100%;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
}

/* ============================================
   LOGIN PAGE
   ============================================ */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--dark-bg) 0%, #1a1f35 100%);
}

.login-container {
    width: 100%;
    padding: 20px;
}

.login-card {
    max-width: 400px;
    margin: 0 auto;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 20px 25px rgba(0, 0, 0, 0.3);
}

.login-card h1 {
    text-align: center;
    margin-bottom: 10px;
    font-size: 28px;
    color: var(--primary-color);
}

.login-card .subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 30px;
    font-size: 14px;
}

.login-form {
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 14px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    background-color: #0f172a;
    color: var(--text-primary);
    border-radius: 6px;
    font-size: 14px;
    transition: all 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.login-info {
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 6px;
    padding: 12px;
    text-align: center;
    margin-top: 20px;
    font-size: 12px;
    color: var(--text-secondary);
}

/* ============================================
   NAVBAR
   ============================================ */
.navbar {
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-brand h1 {
    font-size: 22px;
    color: var(--primary-color);
    margin: 0;
}

.navbar-menu {
    display: flex;
    gap: 20px;
    align-items: center;
}

.user-info {
    font-size: 14px;
    color: var(--text-secondary);
}

.user-info strong {
    color: var(--text-primary);
}

/* ============================================
   CONTAINER E LAYOUT
   ============================================ */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 30px 20px;
}

.content-wrapper {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 30px;
    margin-top: 20px;
}

.main-content {
    min-height: calc(100vh - 200px);
}

.main-content h2 {
    margin-bottom: 20px;
    color: var(--text-primary);
    font-size: 24px;
}

.sidebar {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

@media (max-width: 1024px) {
    .content-wrapper {
        grid-template-columns: 1fr;
    }

    .sidebar {
        display: none;
    }
}

/* ============================================
   SEARCH BAR
   ============================================ */
.search-bar {
    margin-bottom: 30px;
}

.search-form {
    display: flex;
    gap: 10px;
}

.search-form input {
    flex: 1;
    padding: 12px;
    border: 1px solid var(--border-color);
    background-color: var(--card-bg);
    color: var(--text-primary);
    border-radius: 6px;
    font-size: 14px;
}

.search-form input:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

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

.btn-primary:hover {
    background-color: #4f46e5;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

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

.btn-secondary:hover {
    background-color: #475569;
}

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

.btn-success:hover {
    background-color: #16a34a;
    transform: translateY(-2px);
}

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

.btn-warning:hover {
    background-color: #d97706;
    transform: translateY(-2px);
}

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

.btn-danger:hover {
    background-color: #dc2626;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

/* ============================================
   ITEMS GRID E CARDS
   ============================================ */
.items-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.item-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    overflow: hidden;
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
}

.item-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.2);
    transform: translateY(-4px);
}

.item-image {
    height: 200px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.item-image img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.item-placeholder {
    font-size: 60px;
}

.item-info {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.item-info h3 {
    font-size: 18px;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.item-details {
    flex-grow: 1;
    margin-bottom: 15px;
}

.item-details p {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.item-details p strong {
    color: var(--text-primary);
}

.quantity-badge {
    background: var(--primary-color);
    padding: 4px 12px;
    border-radius: 20px;
    font-weight: bold;
    font-size: 12px;
}

.item-actions {
    display: flex;
    gap: 10px;
    margin-top: auto;
}

.item-actions .btn {
    flex: 1;
    padding: 8px 12px;
    font-size: 12px;
}

.inline-form {
    display: contents;
}

/* ============================================
   BADGES E TAGS
   ============================================ */
.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: bold;
    margin-left: 10px;
}

.badge-admin {
    background-color: var(--admin-color);
    color: white;
}

.badge-user {
    background-color: var(--user-color);
    color: white;
}

.tag {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: bold;
    margin-right: 5px;
}

.tag-add {
    background-color: rgba(34, 197, 94, 0.3);
    color: var(--success-color);
}

.tag-remove {
    background-color: rgba(239, 68, 68, 0.3);
    color: var(--danger-color);
}

/* ============================================
   SIDEBAR CARDS
   ============================================ */
.sidebar-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 20px;
}

.sidebar-card h3 {
    font-size: 16px;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.movements-list {
    max-height: 600px;
    overflow-y: auto;
}

.movement-item {
    padding: 12px;
    background: rgba(99, 102, 241, 0.05);
    border-left: 3px solid var(--primary-color);
    border-radius: 4px;
    margin-bottom: 10px;
    font-size: 12px;
}

.movement-item p {
    margin: 0;
}

.empty-state,
.empty-text {
    text-align: center;
    color: var(--text-secondary);
    padding: 40px 20px;
}

/* ============================================
   FLOATING ACTION BUTTON (FAB)
   ============================================ */
.fab {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    text-decoration: none;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
    transition: all 0.3s;
    z-index: 50;
}

.fab:hover {
    transform: scale(1.1) translateY(-5px);
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.6);
}

/* ============================================
   ADMIN PANEL - TABS
   ============================================ */
.admin-tabs {
    position: relative;
}

#tab-users,
#tab-items {
    display: none;
}

.tab-label {
    display: inline-block;
    padding: 12px 24px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px 6px 0 0;
    margin-right: 5px;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 600;
    color: var(--text-secondary);
}

.tab-label:hover {
    color: var(--text-primary);
    border-color: var(--primary-color);
}

#tab-users:checked ~ label[for="tab-users"],
#tab-items:checked ~ label[for="tab-items"] {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.tab-content {
    display: none;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0 6px 6px 6px;
    padding: 30px;
}

#tab-users:checked ~ .tab-content:nth-of-type(1),
#tab-items:checked ~ .tab-content:nth-of-type(2) {
    display: block;
}

.tab-pane h2 {
    margin-top: 0;
    margin-bottom: 20px;
}

/* ============================================
   FORMS
   ============================================ */
.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 30px;
    padding: 20px;
    background: rgba(99, 102, 241, 0.05);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 8px;
}

.form-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 20px;
}

/* ============================================
   TABLES
   ============================================ */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    background: transparent;
}

.data-table thead {
    background: rgba(99, 102, 241, 0.1);
    border-bottom: 2px solid var(--border-color);
}

.data-table th {
    padding: 15px;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
}

.data-table td {
    padding: 15px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.data-table tbody tr:hover {
    background: rgba(99, 102, 241, 0.05);
}

.action-buttons {
    display: flex;
    gap: 5px;
    flex-wrap: wrap;
}

/* ============================================
   MODAL
   ============================================ */
.modal {
    display: none;
    position: fixed;
    z-index: 200;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
}

.modal-content {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    margin: 10% auto;
    padding: 30px;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.modal-content h2 {
    margin-top: 0;
    margin-bottom: 20px;
}

.close {
    color: var(--text-secondary);
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s;
}

.close:hover {
    color: var(--text-primary);
}

/* ============================================
   ALERTS
   ============================================ */
.alert {
    padding: 15px 20px;
    margin-bottom: 20px;
    border-radius: 6px;
    border-left: 4px solid;
    font-size: 14px;
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border-left-color: var(--danger-color);
    color: #fca5a5;
}

.alert-success {
    background: rgba(34, 197, 94, 0.1);
    border-left-color: var(--success-color);
    color: #86efac;
}

/* ============================================
   UTILITY
   ============================================ */
hr {
    margin: 30px 0;
    border: none;
    border-top: 1px solid var(--border-color);
}

select {
    cursor: pointer;
    background-color: var(--card-bg);
    color: var(--text-primary);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 15px;
    }

    .navbar-menu {
        flex-direction: column;
        width: 100%;
        gap: 10px;
    }

    .navbar-menu a {
        width: 100%;
    }

    .container {
        padding: 15px 10px;
    }

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

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

    .search-form {
        flex-direction: column;
    }

    .data-table {
        font-size: 12px;
    }

    .data-table th,
    .data-table td {
        padding: 10px;
    }

    .fab {
        width: 50px;
        height: 50px;
        font-size: 24px;
        bottom: 20px;
        right: 20px;
    }

    .modal-content {
        margin: 30% auto;
        width: 95%;
    }
}

@media (max-width: 480px) {
    .login-card {
        padding: 25px;
    }

    .navbar-brand h1 {
        font-size: 18px;
    }

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

    .action-buttons {
        flex-direction: column;
    }

    .action-buttons .btn {
        width: 100%;
    }

    .tab-label {
        padding: 10px 15px;
        font-size: 12px;
    }
}