:root {
    --primary: #4F46E5; /* Indigo */
    --primary-hover: #4338CA;
    --bg-color: #F8FAFC; /* Light Slate */
    --surface: #FFFFFF; /* White */
    --surface-glass: rgba(255, 255, 255, 0.8);
    --border: rgba(0, 0, 0, 0.1);
    --text-main: #0F172A; /* Dark Slate */
    --text-muted: #64748B; /* Medium Slate */
    
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', sans-serif;
}

body {
    background: linear-gradient(135deg, #F1F5F9 0%, #E2E8F0 100%);
    color: var(--text-main);
    min-height: 100vh;
}

.app-container.top-nav-layout {
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

/* Top Navigation */
.top-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 3rem;
    background: var(--surface-glass);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(10px);
}

.logo {
    display: flex;
    align-items: center;
}

.logo h2 {
    font-size: 1.5rem;
    background: linear-gradient(to right, #818CF8, #C084FC);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin: 0;
}

.nav-tabs {
    display: flex;
    gap: 1rem;
}

.nav-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 0.8rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.nav-btn:hover {
    background: rgba(0,0,0,0.05);
    color: var(--text-main);
}

.nav-btn.active {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 15px rgba(79, 70, 229, 0.4);
}

/* Main Content */
.main-content {
    flex: 1;
    overflow-y: auto;
    padding: 2rem 3rem;
    background-image: radial-gradient(circle at top right, rgba(79, 70, 229, 0.1) 0%, transparent 40%);
}

.view {
    display: none;
    animation: fadeIn 0.4s ease forwards;
}

.view.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

header {
    margin-bottom: 2.5rem;
}

header h1 {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

header p {
    color: var(--text-muted);
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.dashboard-header h1 {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

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

.header-actions {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.btn-export {
    background: linear-gradient(135deg, #10b981, #059669);
    color: #fff;
    border: none;
    padding: 0.7rem 1.4rem;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(16,185,129,0.3);
}

.btn-export:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(16,185,129,0.4);
}

.btn-import {
    background: linear-gradient(135deg, #8b5cf6, #6d28d9);
    color: #fff;
    padding: 0.7rem 1.4rem;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(139,92,246,0.3);
    display: inline-block;
}

.btn-import:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(139,92,246,0.4);
}

/* Form Styles */
.glass-form {
    background: var(--surface-glass);
    border: 1px solid var(--border);
    backdrop-filter: blur(12px);
    border-radius: 1rem;
    padding: 2.5rem;
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

input, select, textarea {
    background: rgba(255, 255, 255, 0.6);
    border: 1px solid rgba(0, 0, 0, 0.15);
    color: var(--text-main);
    padding: 0.8rem 1rem;
    border-radius: 0.5rem;
    font-size: 1rem;
    outline: none;
    transition: all 0.3s ease;
}

input:disabled, select:disabled, textarea:disabled {
    background: rgba(241, 245, 249, 0.55);
    color: var(--text-muted);
    cursor: not-allowed;
    border-color: rgba(0, 0, 0, 0.08);
}

input:focus, select:focus, textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
}

.form-actions {
    margin-top: 2rem;
    display: flex;
    justify-content: flex-end;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    border: none;
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(79, 70, 229, 0.3);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(79, 70, 229, 0.5);
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.stat-card {
    background: var(--surface-glass);
    border: 1px solid var(--border);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: 1rem;
    border-top: 4px solid var(--primary);
}

.stat-card.warning { border-top-color: var(--warning); }
.stat-card.success { border-top-color: var(--success); }
.stat-card.info { border-top-color: #8b5cf6; }

.stat-card h3 {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
}

/* Filters */
.filters-bar {
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
    background: var(--surface-glass);
    border: 1px solid var(--border);
    backdrop-filter: blur(10px);
    border-radius: 1rem;
}

.filters-bar input[type="text"] {
    flex: 1;
    min-width: 250px;
    margin: 0;
}

.filter-checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-main);
    text-transform: none;
    font-size: 0.95rem;
    user-select: none;
}

.filter-checkbox input {
    width: 1.2rem;
    height: 1.2rem;
    cursor: pointer;
    margin: 0;
}

.header-filter {
    appearance: none;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 0.8rem;
    cursor: pointer;
    padding: 0;
    margin-left: 5px;
    outline: none;
}
.header-filter option {
    color: #333;
    background: #fff;
}
.header-filter:focus {
    color: var(--primary);
}

/* Table */
.glass-table {
    background: var(--surface-glass);
    border: 1px solid var(--border);
    backdrop-filter: blur(10px);
    border-radius: 1rem;
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    white-space: nowrap;
}

th, td {
    padding: 1.2rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    font-weight: 600;
    color: var(--text-muted);
    background: rgba(0,0,0,0.05);
}

tbody tr {
    transition: background 0.3s;
}

tbody tr:hover {
    background: rgba(0,0,0,0.02);
}

.badge {
    padding: 0.3rem 0.8rem;
    border-radius: 2rem;
    font-size: 0.8rem;
    font-weight: 600;
}

.badge.pending {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning);
}

.badge.confirmed {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.badge.neutral {
    background: rgba(0, 0, 0, 0.05);
    color: var(--text-muted);
}

.badge.reject {
    background: rgba(239, 68, 68, 0.15);
    color: #dc2626;
}

/* Actions */
.action-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.4rem;
    border-radius: 0.3rem;
    font-size: 0.9rem;
    margin-right: 0.3rem;
    transition: background 0.2s;
}

.action-btn.edit {
    color: var(--primary);
}

.action-btn.delete {
    color: var(--danger);
}

.action-btn:hover {
    background: rgba(0,0,0,0.05);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
}

.page-btn {
    background: var(--surface-glass);
    border: 1px solid var(--border);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    cursor: pointer;
    color: var(--text-main);
    transition: all 0.2s;
}

.page-btn:hover:not(:disabled) {
    background: var(--primary);
    color: white;
}

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

.page-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    max-width: 400px;
    width: 90%;
    text-align: center;
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.modal-overlay.active .modal-content {
    transform: translateY(0);
}

.modal-content h3 {
    margin-bottom: 1rem;
    font-size: 1.4rem;
    color: var(--text-main);
}

.modal-content p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

.modal-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.btn-secondary {
    background: transparent;
    color: var(--text-main);
    border: 1px solid var(--border);
    padding: 0.8rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-secondary:hover {
    background: rgba(0,0,0,0.05);
}

.btn-danger {
    background: var(--danger);
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
    background: #DC2626;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.4);
}

/* Responsive Design */
@media (max-width: 768px) {
    .top-nav {
        flex-direction: column;
        padding: 1rem;
        gap: 1rem;
    }

    .nav-tabs {
        width: 100%;
        justify-content: space-around;
    }

    .main-content {
        padding: 1rem;
    }

    header h1 {
        font-size: 1.8rem;
    }

    .glass-form {
        padding: 1.5rem;
    }

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

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

    .btn-primary {
        width: 100%;
        padding: 1rem;
    }
    
    .form-actions {
        width: 100%;
    }
}

/* ── Login Overlay ──────────────────────────────────────────────── */
.login-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #312e81 100%);
    z-index: 9999;
    align-items: center;
    justify-content: center;
}

.login-overlay.active {
    display: flex;
}

.login-card {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(20px);
    border-radius: 1.5rem;
    padding: 3rem 2.5rem;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.4);
    animation: loginSlideUp 0.5s ease forwards;
}

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

.login-logo {
    text-align: center;
    margin-bottom: 2.5rem;
}

.login-icon {
    font-size: 3.5rem;
    margin-bottom: 0.75rem;
    animation: pulse 2s infinite;
}

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

.login-logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 0.25rem;
}

.login-logo p {
    color: rgba(255, 255, 255, 0.55);
    font-size: 0.9rem;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.login-field {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.login-field label {
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.875rem;
    font-weight: 500;
}

.login-field input {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    padding: 0.85rem 1rem;
    border-radius: 0.6rem;
    font-size: 1rem;
    transition: all 0.3s;
}

.login-field input::placeholder {
    color: rgba(255, 255, 255, 0.35);
}

.login-field input:focus {
    border-color: #818cf8;
    background: rgba(255, 255, 255, 0.15);
    box-shadow: 0 0 0 3px rgba(129, 140, 248, 0.25);
    outline: none;
}

.btn-login {
    width: 100%;
    background: linear-gradient(135deg, #6366f1, #4f46e5);
    color: #fff;
    border: none;
    padding: 1rem;
    font-size: 1rem;
    font-weight: 700;
    border-radius: 0.6rem;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
    margin-top: 0.5rem;
    letter-spacing: 0.03em;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.5);
}

.btn-login:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.login-error {
    color: #fca5a5;
    font-size: 0.875rem;
    text-align: center;
    min-height: 1.2rem;
}

/* ── Nav User / Logout ──────────────────────────────────────────── */
.nav-user {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

#user-email-display {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

.btn-logout {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.25);
    padding: 0.45rem 1rem;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-logout:hover {
    background: var(--danger);
    color: #fff;
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.35);
}