/* ==========================================
   🎨 ASSOCLEARANCE FLIGHTS ANALYSIS v28
   Design Moderno + Responsive + Animazioni
   ========================================== */

/* ==========================================
   1. RESET & VARIABILI
   ========================================== */

:root {
    --topbar-height: 56px;
    /* Palette Primaria */
    --color-primary: #10b981;
    --color-primary-dark: #059669;
    --color-secondary: #3b82f6;
    --color-secondary-dark: #2563eb;
    --color-accent: #ffc107;
    --color-accent-dark: #ff9800;
    --color-danger: #ef4444;
    --color-danger-dark: #dc2626;
    
    /* Grigi */
    --color-bg-primary: #1f2937;
    --color-bg-secondary: #374151;
    --color-bg-tertiary: #4b5563;
    --color-text-primary: #f3f4f6;
    --color-text-secondary: #e5e7eb;
    --color-text-muted: #9ca3af;
    --color-border: #4b5563;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.25);
    --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.35);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-full: 9999px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Inter', Helvetica, Arial, sans-serif;
    background: linear-gradient(135deg, #111827 0%, #1f2937 50%, #374151 100%);
    background-attachment: fixed;
    color: var(--color-text-primary);
    font-size: 15px;
    line-height: 1.6;
    overflow-x: hidden;
}

/* ==========================================
   2. LAYOUT PRINCIPALE
   ========================================== */

.app-layout {
    display: flex;
    min-height: 100vh;
    height: 100vh;
    overflow: hidden;
}

.wrap {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 24px;
    width: 100%;
}

/* ==========================================
   3. SIDEBAR PROFESSIONALE
   ========================================== */

.sidebar {
    width: 260px;
    flex: 0 0 260px;
    background: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
    border-right: 1px solid rgba(255, 193, 7, 0.15);
    padding: 24px 16px;
    box-sizing: border-box;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    z-index: 20;
    box-shadow: var(--shadow-lg);
}

.sidebar-title {
    font-weight: 900;
    font-size: 20px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-align: center;
    margin-bottom: 32px;
    letter-spacing: 1px;
    text-transform: uppercase;
    padding-bottom: 20px;
    border-bottom: 2px solid rgba(255, 193, 7, 0.2);
}

.menu {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.menu button {
    width: 100%;
    border: none;
    border-radius: var(--radius-md);
    padding: 14px 16px;
    cursor: pointer;
    text-align: left;
    font-weight: 600;
    font-size: 14px;
    background: transparent;
    color: var(--color-text-muted);
    transition: all var(--transition-normal);
    letter-spacing: 0.3px;
    position: relative;
    overflow: hidden;
}

.menu button::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 4px;
    background: var(--color-accent);
    transform: scaleY(0);
    transition: transform var(--transition-normal);
}

.menu button:hover {
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-primary);
    transform: translateX(4px);
}

.menu button:hover::before {
    transform: scaleY(1);
}

.menu button.active {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.15), rgba(255, 193, 7, 0.15));
    color: var(--color-accent);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.25);
    font-weight: 700;
    border-left: 4px solid var(--color-accent);
}

.menu button.active::before {
    transform: scaleY(1);
}

/* ==========================================
   4. MAIN CONTENT
   ========================================== */

.main-content {
    flex: 1;
    height: 100vh;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 28px;
    box-sizing: border-box;
    background: transparent;
}

.main-content .wrap {
    animation: fadeInUp 0.5s ease;
}

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

/* ==========================================
   5. TYPOGRAPHY
   ========================================== */

h1 {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-align: center;
    margin-bottom: 24px;
    font-weight: 800;
    font-size: clamp(24px, 5vw, 36px);
    letter-spacing: -0.5px;
    text-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

h2 {
    color: var(--color-text-secondary);
    margin: 0 0 16px 0;
    font-weight: 700;
    font-size: 22px;
    letter-spacing: -0.3px;
}

h3 {
    color: var(--color-text-secondary);
    margin: 0 0 12px 0;
    font-weight: 600;
    font-size: 18px;
    letter-spacing: -0.2px;
}

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

.font-bold {
    font-weight: 700;
}

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

.mono {
    font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', 'Courier New', monospace;
    font-size: 13px;
}

/* ==========================================
   6. CARDS CON GRADIENTS E GLASSMORPHISM
   ========================================== */

.card {
    background: linear-gradient(135deg, rgba(55, 65, 81, 0.9), rgba(75, 85, 99, 0.8));
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 28px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(255, 193, 7, 0.1);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, 
        transparent 0%,
        var(--color-primary) 25%,
        var(--color-accent) 50%,
        var(--color-secondary) 75%,
        transparent 100%
    );
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(255, 193, 7, 0.25);
}

.card:hover::before {
    opacity: 1;
}

/* ==========================================
   7. FORM ELEMENTS MODERNIZZATI
   ========================================== */

label {
    display: block;
    margin-bottom: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="date"],
input[type="time"],
input[type="file"],
select {
    width: 100%;
    padding: 12px 14px;
    border: 2px solid var(--color-border);
    background: rgba(75, 85, 99, 0.6);
    color: var(--color-text-primary);
    border-radius: var(--radius-sm);
    box-sizing: border-box;
    transition: all var(--transition-fast);
    font-size: 14px;
    font-weight: 500;
    font-family: inherit;
}

/* ==========================================
   AUTH (Login / Reset / Crea account)
   ========================================== */

.auth-overlay {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: rgba(17, 24, 39, 0.72);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 9999;
}

.auth-card {
    width: min(520px, 100%);
    background: linear-gradient(180deg, rgba(31,41,55,0.92), rgba(17,24,39,0.92));
    border: 1px solid rgba(75, 85, 99, 0.55);
    border-radius: var(--radius-lg);
    padding: 26px 24px;
    box-shadow: var(--shadow-xl);
}

.auth-title {
    font-size: 28px;
    font-weight: 900;
    letter-spacing: 0.3px;
    margin-bottom: 6px;
}

.auth-subtitle {
    color: var(--color-text-muted);
    font-weight: 600;
    margin-bottom: 14px;
}

.auth-tabs {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin: 14px 0 16px;
}

.auth-tab {
    border: 1px solid rgba(75, 85, 99, 0.55);
    background: rgba(55, 65, 81, 0.45);
    color: var(--color-text-secondary);
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 800;
    letter-spacing: 0.4px;
    transition: all var(--transition-fast);
}

.auth-tab:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
    border-color: rgba(16, 185, 129, 0.35);
}

.auth-tab.active {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    border-color: rgba(16, 185, 129, 0.6);
    color: #fff;
    box-shadow: 0 8px 25px rgba(16, 185, 129, 0.25);
}

.auth-input {
    width: 100%;
    margin-bottom: 12px;
}

.auth-error {
    background: rgba(239, 68, 68, 0.12);
    border: 1px solid rgba(239, 68, 68, 0.35);
    color: #fecaca;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    font-weight: 700;
    margin: 10px 0;
}

.auth-msg {
    background: rgba(59, 130, 246, 0.12);
    border: 1px solid rgba(59, 130, 246, 0.35);
    color: #bfdbfe;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    font-weight: 700;
    margin: 10px 0;
}

.auth-actions {
    display: flex;
    gap: 10px;
    margin-top: 8px;
}

.auth-actions .btn {
    flex: 1;
}

input:focus,
select:focus {
    border-color: var(--color-primary);
    outline: none;
    background: rgba(55, 65, 81, 0.8);
    box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.15);
    transform: translateY(-2px);
}

input[type="file"] {
    padding: 8px 12px;
    cursor: pointer;
}

/* ==========================================
   8. BUTTONS PREMIUM
   ========================================== */

.button-group {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 20px;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 700;
    font-size: 14px;
    transition: all var(--transition-fast);
    letter-spacing: 0.5px;
    text-transform: uppercase;
    font-family: inherit;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:active::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.35);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-primary-dark), #047857);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.5);
    transform: translateY(-2px);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--color-bg-tertiary), #6b7280);
    color: var(--color-text-secondary);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, #6b7280, #9ca3af);
    color: var(--color-text-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-danger {
    background: linear-gradient(135deg, var(--color-danger), var(--color-danger-dark));
    color: white;
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.35);
}

.btn-danger:hover {
    background: linear-gradient(135deg, var(--color-danger-dark), #b91c1c);
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.5);
    transform: translateY(-2px);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

.btn:active {
    transform: translateY(0) scale(0.98);
}

/* ==========================================
   9. TABLES PROFESSIONALI
   ========================================== */

table {
    border-collapse: collapse;
    width: 100%;
}

th,
td {
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid rgba(75, 85, 99, 0.5);
}

th {
    text-transform: uppercase;
    font-size: 11px;
    color: var(--color-text-muted);
    font-weight: 800;
    letter-spacing: 1px;
    border-bottom: 2px solid rgba(107, 114, 128, 0.5);
    background: linear-gradient(180deg, rgba(55, 65, 81, 0.6), rgba(75, 85, 99, 0.4));
    position: sticky;
    top: 0;
    z-index: 10;
}

tr {
    transition: all var(--transition-fast);
}

tr:hover td {
    background: rgba(16, 185, 129, 0.05);
}

tr:last-child td {
    border-bottom: none;
}

.table-scroll {
    max-height: 500px;
    overflow: auto;
    border-radius: var(--radius-sm);
    box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.1);
}

.full-width {
    width: 100%;
}

/* ==========================================
   10. DRAG & DROP ZONE
   ========================================== */

.drop-zone {
    border: 3px dashed rgba(148, 163, 184, 0.4);
    border-radius: var(--radius-lg);
    padding: 48px 24px;
    text-align: center;
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.4), rgba(55, 65, 81, 0.3));
    transition: all var(--transition-normal);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.drop-zone::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.1) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-slow);
}

.drop-zone:hover {
    border-color: var(--color-primary);
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.6), rgba(55, 65, 81, 0.5));
    transform: scale(1.02);
}

.drop-zone:hover::before {
    opacity: 1;
}

.drop-zone.drag-active {
    border-color: var(--color-primary);
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.15), rgba(255, 193, 7, 0.1));
    transform: scale(1.05);
    box-shadow: 0 0 30px rgba(16, 185, 129, 0.3);
}

.drop-text {
    font-size: 20px;
    color: var(--color-text-primary);
    font-weight: 700;
    margin-bottom: 8px;
    position: relative;
    z-index: 1;
}

.drop-sub {
    font-size: 14px;
    color: var(--color-text-muted);
    position: relative;
    z-index: 1;
}

.hidden-input {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

/* ==========================================
   11. MODAL PROFESSIONALE
   ========================================== */

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.modal-content {
    background: linear-gradient(135deg, #1e293b, #374151);
    padding: 32px;
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 600px;
    box-shadow: var(--shadow-xl);
    border: 2px solid rgba(255, 193, 7, 0.3);
    animation: slideUp 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes slideUp {
    from {
        transform: translateY(50px) scale(0.9);
        opacity: 0;
    }
    to {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    border-bottom: 2px solid rgba(75, 85, 99, 0.5);
    padding-bottom: 16px;
}

.close-btn {
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    font-size: 32px;
    cursor: pointer;
    transition: all var(--transition-fast);
    padding: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
}

.close-btn:hover {
    color: var(--color-text-primary);
    background: rgba(239, 68, 68, 0.15);
    transform: rotate(90deg);
}

/* ==========================================
   12. LAYOUT HELPERS
   ========================================== */

.grid-layout-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.grid-layout-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.comparison-controls {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr auto;
    gap: 16px;
    align-items: flex-end;
    margin-bottom: 24px;
}

.comparison-controls.single {
    grid-template-columns: 1fr auto;
}

/* ==========================================
   13. BADGES & STATUS
   ========================================== */

.badge {
    padding: 10px 18px;
    border: 2px solid;
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    display: inline-block;
    transition: all var(--transition-fast);
}

.badge:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

.badge-a {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: rgba(16, 185, 129, 0.1);
}

.badge-b {
    border-color: var(--color-secondary);
    color: var(--color-secondary);
    background: rgba(59, 130, 246, 0.1);
}

.badge-accent {
    border-color: var(--color-accent);
    color: var(--color-accent);
    background: rgba(255, 193, 7, 0.1);
}

/* ==========================================
   14. CHARTS
   ========================================== */

.chart-container {
    height: 300px;
    position: relative;
    padding: 16px;
    background: rgba(15, 23, 42, 0.4);
    border-radius: var(--radius-md);
    box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.15);
}

/* ==========================================
   15. PAGINATION
   ========================================== */

.pagination-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 16px;
    border-top: 2px solid rgba(75, 85, 99, 0.5);
    margin-top: 20px;
}

/* ==========================================
   16. SCROLLBAR PERSONALIZZATA
   ========================================== */

::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

::-webkit-scrollbar-track {
    background: rgba(15, 23, 42, 0.5);
    border-radius: 6px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--color-primary), var(--color-accent));
    border-radius: 6px;
    border: 2px solid rgba(15, 23, 42, 0.5);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--color-accent), var(--color-primary));
    box-shadow: 0 0 8px rgba(16, 185, 129, 0.5);
}

/* ==========================================
   17. RESPONSIVE DESIGN
   ========================================== */

@media (max-width: 1200px) {
    .wrap {
        max-width: 100%;
        padding: 0 16px;
    }
}

@media (max-width: 768px) {
    .sidebar {
        width: 70px;
        flex-basis: 70px;
        padding: 16px 8px;
    }

    .sidebar-title {
        font-size: 11px;
        margin-bottom: 16px;
        padding-bottom: 12px;
    }

    .menu button {
        font-size: 10px;
        padding: 12px 8px;
        text-align: center;
    }

    .main-content {
        padding: 16px;
    }

    h1 {
        font-size: 24px;
    }

    .card {
        padding: 20px;
    }

    .grid-layout-2,
    .grid-layout-3,
    .comparison-controls {
        grid-template-columns: 1fr;
    }

    .btn {
        padding: 10px 16px;
        font-size: 13px;
    }

    table {
        font-size: 12px;
    }

    th,
    td {
        padding: 10px 12px;
    }

    .chart-container {
        height: 250px;
    }

    .modal-content {
        padding: 24px;
        max-width: 95%;
    }
}

@media (max-width: 480px) {
    .sidebar {
        width: 60px;
        flex-basis: 60px;
        padding: 12px 6px;
    }

    .sidebar-title {
        font-size: 9px;
        writing-mode: vertical-rl;
        text-orientation: mixed;
    }

    .menu button {
        font-size: 9px;
        padding: 10px 6px;
    }

    .main-content {
        padding: 12px;
    }

    h1 {
        font-size: 20px;
        margin-bottom: 16px;
    }

    .card {
        padding: 16px;
    }
}

/* ==========================================
   18. ANIMATIONS & TRANSITIONS
   ========================================== */

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.6;
    }
}

.loading {
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

.shimmer {
    background: linear-gradient(90deg, 
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.1) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    background-size: 1000px 100%;
    animation: shimmer 2s infinite;
}

/* ==========================================
   19. UTILITIES
   ========================================== */

.text-a { color: var(--color-primary); }
.text-b { color: var(--color-secondary); }
.text-danger { color: var(--color-danger); }

.label-rev-a { color: var(--color-primary) !important; }
.label-rev-b { color: var(--color-secondary) !important; }

.status-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: 30px;
    gap: 12px;
}

.status-text {
    font-size: 13px;
    color: var(--color-text-muted);
    font-weight: 500;
}

/* ==========================================
   20. PRINT STYLES
   ========================================== */

@media print {
    .sidebar,
    .button-group,
    .btn {
        display: none !important;
    }

    .main-content {
        margin: 0;
        padding: 0;
    }

    .card {
        break-inside: avoid;
        box-shadow: none;
    }
}

/* ==========================================
   21. ACCESSIBILITY
   ========================================== */

.btn:focus-visible,
input:focus-visible,
select:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

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

/* ==========================================
   22. DARK MODE ENHANCEMENTS
   ========================================== */

@media (prefers-color-scheme: dark) {
    body {
        background: linear-gradient(135deg, #0a0f1a 0%, #1f2937 50%, #374151 100%);
    }
    
    .card {
        background: linear-gradient(135deg, rgba(30, 41, 59, 0.95), rgba(55, 65, 81, 0.9));
    }
}


/* ==========================================
   ✅ MOBILE AUTOSIZE / OFFCANVAS SIDEBAR
   (layout-only, no business logic changes)
   ========================================== */

.mobile-topbar { display: none; }
.sidebar-backdrop { display: none; }

@media (max-width: 768px) {
  .app-layout {
    height: 100dvh;
    min-height: 100dvh;
    overflow: hidden;
  }

  /* Off-canvas sidebar */
  .sidebar.mobile {
    position: fixed;
    left: 0;
    top: 0;
    height: 100dvh;
    width: min(82vw, 320px);
    max-width: 320px;
    flex: none;
    transform: translateX(-110%);
    transition: transform var(--transition-normal);
    padding: 18px 14px;
    z-index: 24;
  }
  .sidebar.mobile.open {
    transform: translateX(0);
  }

  /* Restore readable title/buttons on mobile (override older shrink rules) */
  .sidebar-title {
    font-size: 16px;
    margin-bottom: 18px;
    padding-bottom: 14px;
    writing-mode: initial;
    text-orientation: initial;
  }
  .menu button {
    font-size: 14px;
    padding: 14px 12px;
  }

  /* Topbar */
  .mobile-topbar {
    display: flex;
    align-items: center;
    gap: 10px;
    position: fixed;
    left: 0;
    right: 0;
    top: 0;
    height: var(--topbar-height);
    padding: 0 12px;
    padding-top: env(safe-area-inset-top);
    background: rgba(15, 23, 42, 0.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 193, 7, 0.15);
    z-index: 25;
  }
  .mobile-title {
    font-weight: 800;
    letter-spacing: 0.3px;
    color: rgba(255,255,255,0.92);
    user-select: none;
  }
  .hamburger {
    border: none;
    cursor: pointer;
    border-radius: var(--radius-sm);
    padding: 10px 12px;
    font-weight: 900;
    font-size: 18px;
    line-height: 1;
    color: rgba(255,255,255,0.95);
    background: rgba(255,255,255,0.08);
    transition: transform var(--transition-fast), background var(--transition-fast);
  }
  .hamburger:active {
    transform: scale(0.98);
  }

  /* Backdrop */
  .sidebar-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.35);
    z-index: 23;
  }

  /* Main content: leave space for the fixed topbar */
  .main-content {
    height: 100dvh;
    overflow-y: auto;
    padding: 16px;
    padding-top: calc(var(--topbar-height) + 16px + env(safe-area-inset-top));
  }

  /* Make large tables usable on mobile */
  .table-scroll, .card .table-scroll {
    max-height: 55vh;
  }
  table { font-size: 12px; }
  th, td { padding: 10px 10px; }
}

@media (max-width: 480px) {
  .sidebar.mobile {
    width: min(90vw, 340px);
  }
  .mobile-title { font-size: 14px; }
  .hamburger { padding: 10px 10px; }
  .main-content { padding: 12px; padding-top: calc(var(--topbar-height) + 12px + env(safe-area-inset-top)); }
}