/* Modern Responsive CSS */
:root {
    --primary: #4f46e5;
    --primary-dark: #4338ca;
    --secondary: #64748b;
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --dark: #1e293b;
    --light: #f8fafc;
    --border: #e2e8f0;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--light);
    color: var(--dark);
    line-height: 1.6;
    margin-left: 260px;
}

/* Container */
.container {
    max-width: 100%;
    margin: 0 auto;
    padding: 2rem 1rem;
    width: 100%;
}

/* Navigation - Sidebar */
.navbar {
    background: var(--dark);
    position: fixed;
    top: 0;
    left: 0;
    width: 260px;
    height: 100vh;
    z-index: 100;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    box-shadow: 2px 0 10px rgba(0,0,0,0.1);
}

.navbar .container {
    display: flex;
    flex-direction: column;
    padding: 0;
    width: 100%;
}

.navbar-brand {
    color: white;
    font-size: 1.25rem;
    font-weight: 700;
    text-decoration: none;
    padding: 1.5rem 1rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.navbar-toggle {
    display: none;
}

.navbar-menu {
    display: flex;
    flex-direction: column;
    gap: 0;
    padding: 1rem 0;
}

.navbar-menu a {
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    padding: 0.875rem 1.5rem;
    transition: all 0.2s;
    white-space: nowrap;
    border-left: 3px solid transparent;
}

.navbar-menu a:hover {
    background: rgba(255,255,255,0.05);
    color: white;
    border-left-color: var(--primary);
}

.navbar-menu a.active {
    background: rgba(79, 70, 229, 0.1);
    color: white;
    border-left-color: var(--primary);
}

/* Main Content with Sidebar */
body {
    margin-left: 260px;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

/* Cards */
.card {
    background: white;
    border-radius: 1rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.card-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.card-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.card-body {
    padding: 1.5rem;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: white;
    padding: 1.5rem;
    border-radius: 1rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    text-align: center;
}

.stat-card .number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-card .label {
    color: var(--secondary);
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

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

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

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

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

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    margin: 0 0.125rem;
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--dark);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: border-color 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

/* Tables */
.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: -1.5rem -1.5rem 0 -1.5rem;
    padding: 1.5rem;
}

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

.table th, .table td {
    padding: 0.5rem 0.4rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
    font-size: 0.8rem;
}

.table th {
    background: var(--light);
    font-weight: 600;
    white-space: nowrap;
}

.table tr:hover {
    background: rgba(79, 70, 229, 0.02);
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
}

.badge-success { background: #dcfce7; color: #166534; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-danger { background: #fee2e2; color: #991b1b; }
.badge-secondary { background: #e5e7eb; color: #4b5563; }

/* Button Sizes */
.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
    margin: 0 0.25rem;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
}

.btn-primary:hover {
    opacity: 0.9;
}

.btn-success {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    border: none;
}

.btn-success:hover {
    opacity: 0.9;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: 1rem;
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 1.125rem;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--secondary);
}

.modal-body {
    padding: 1.5rem;
}

/* Alerts */
.alert {
    padding: 1rem 1.5rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
}

.alert-success { background: #dcfce7; color: #166534; border: 1px solid #bbf7d0; }
.alert-danger { background: #fee2e2; color: #991b1b; border: 1px solid #fecaca; }
.alert-warning { background: #fef3c7; color: #92400e; border: 1px solid #fde68a; }

/* Login Page */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
}

.login-box {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 25px 50px -12px rgba(0,0,0,0.25);
}

.login-box h1 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--primary);
}

/* Page Header */
.page-header {
    padding: 2rem 0;
}

.page-header h1 {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

/* Actions */
.actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* Responsive */
@media (max-width: 1024px) {
    .navbar {
        width: 220px;
    }
    
    body {
        margin-left: 220px;
    }
}

@media (max-width: 900px) {
    .navbar {
        width: 260px;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    
    .navbar.active {
        transform: translateX(0);
    }
    
    body {
        margin-left: 0;
    }
    
    .navbar-toggle {
        display: block;
        position: fixed;
        top: 1rem;
        left: 1rem;
        z-index: 101;
        background: var(--dark);
        border: none;
        color: white;
        font-size: 1.5rem;
        cursor: pointer;
        padding: 0.5rem;
        border-radius: 0.5rem;
        box-shadow: 0 2px 10px rgba(0,0,0,0.2);
    }
    
    .navbar-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0,0,0,0.5);
        z-index: 99;
    }
    
    .navbar-overlay.active {
        display: block;
    }
    
    .container {
        padding: 4rem 1rem 2rem;
    }
}

@media (max-width: 768px) {
    .card-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stat-card .number {
        font-size: 2rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .table {
        font-size: 0.875rem;
    }
    
    .table th, .table td {
        padding: 0.75rem 0.5rem;
    }
    
    .btn {
        font-size: 0.8rem;
        padding: 0.5rem 1rem;
    }
    
    .btn-sm {
        font-size: 0.7rem;
        padding: 0.3rem 0.6rem;
    }
    
    .page-header h1 {
        font-size: 1.5rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .toast-container {
        right: 10px;
        left: 10px;
        max-width: none;
    }
    
    .toast {
        min-width: auto;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .actions {
        flex-direction: column;
    }
    
    .table-responsive {
        margin: 0 -1rem;
    }
    
    .card-header h2 {
        font-size: 1.1rem;
    }
    
    .form-control {
        font-size: 16px; /* Prevents zoom on iOS */
    }
    
    .modal-content {
        margin: 0;
        border-radius: 0;
        max-height: 100vh;
    }
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-width: 400px;
}

.toast {
    background: white;
    border-radius: 12px;
    padding: 16px 20px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.15);
    display: flex;
    align-items: center;
    gap: 12px;
    animation: slideIn 0.3s ease-out;
    border-left: 4px solid;
    min-width: 300px;
}

.toast.success {
    border-left-color: var(--success);
}

.toast.error {
    border-left-color: var(--danger);
}

.toast.warning {
    border-left-color: var(--warning);
}

.toast.info {
    border-left-color: var(--primary);
}

.toast-icon {
    font-size: 24px;
    flex-shrink: 0;
}

.toast.success .toast-icon { color: var(--success); }
.toast.error .toast-icon { color: var(--danger); }
.toast.warning .toast-icon { color: var(--warning); }
.toast.info .toast-icon { color: var(--primary); }

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--dark);
}

.toast-message {
    font-size: 14px;
    color: var(--secondary);
}

.toast-close {
    background: none;
    border: none;
    font-size: 20px;
    color: var(--secondary);
    cursor: pointer;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.2s;
}

.toast-close:hover {
    background: rgba(0,0,0,0.05);
}

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(400px);
        opacity: 0;
    }
}

.toast.removing {
    animation: slideOut 0.3s ease-out forwards;
}

/* Login Page - Modern Design */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    background: #0f172a;
    position: relative;
    overflow: hidden;
}

.login-container::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, transparent 70%);
    top: -200px;
    right: -200px;
    animation: float 15s infinite ease-in-out;
}

.login-container::after {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.15) 0%, transparent 70%);
    bottom: -150px;
    left: -150px;
    animation: float 20s infinite ease-in-out reverse;
}

@keyframes float {
    0%, 100% { 
        transform: translate(0, 0) scale(1);
        opacity: 1;
    }
    50% { 
        transform: translate(50px, 50px) scale(1.1);
        opacity: 0.8;
    }
}

.login-box {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    padding: 3rem 2.5rem;
    border-radius: 24px;
    width: 100%;
    max-width: 440px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    position: relative;
    z-index: 1;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

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

.login-logo-icon {
    font-size: 72px;
    margin-bottom: 1rem;
    display: inline-block;
    filter: drop-shadow(0 0 20px rgba(59, 130, 246, 0.5));
    animation: pulse 3s infinite ease-in-out;
}

@keyframes pulse {
    0%, 100% { 
        transform: scale(1);
        filter: drop-shadow(0 0 20px rgba(59, 130, 246, 0.5));
    }
    50% { 
        transform: scale(1.05);
        filter: drop-shadow(0 0 30px rgba(59, 130, 246, 0.8));
    }
}

.login-box h1 {
    text-align: center;
    margin-bottom: 0.5rem;
    color: white;
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.login-subtitle {
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 2.5rem;
    font-size: 0.95rem;
}

.login-form .form-group {
    margin-bottom: 1.5rem;
}

.login-form label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.9rem;
}

.login-form .form-control {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s;
    background: rgba(255, 255, 255, 0.05);
    color: white;
}

.login-form .form-control::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

.login-form .form-control:focus {
    outline: none;
    border-color: #3b82f6;
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
}

.login-form .btn-primary {
    width: 100%;
    padding: 1rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 12px;
    margin-top: 1rem;
    background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    border: none;
    color: white;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.login-form .btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.login-form .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.5);
}

.login-form .btn-primary:hover::before {
    left: 100%;
}

.login-form .btn-primary:active {
    transform: translateY(0);
}

.login-footer {
    text-align: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.login-footer p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
}

.login-footer a {
    color: #3b82f6;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
}

.login-footer a:hover {
    color: #60a5fa;
    text-decoration: underline;
}

/* Alert in login */
.login-box .alert {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #fca5a5;
    padding: 1rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 480px) {
    .login-box {
        padding: 2rem 1.5rem;
    }
    
    .login-logo-icon {
        font-size: 56px;
    }
    
    .login-box h1 {
        font-size: 1.75rem;
    }
}

/* Password Toggle */
.password-wrapper {
    position: relative;
}

.password-toggle {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    user-select: none;
    font-size: 1.2rem;
    color: var(--secondary);
    background: none;
    border: none;
    padding: 0.5rem;
}

.password-toggle:hover {
    color: var(--primary);
}

.password-display {
    font-family: monospace;
    background: var(--light);
    padding: 0.5rem;
    border-radius: 0.25rem;
    word-break: break-all;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
}

.password-display code {
    flex: 1;
}

.password-display button {
    background: var(--primary);
    color: white;
    border: none;
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    cursor: pointer;
    font-size: 0.75rem;
    white-space: nowrap;
}

.password-display button:hover {
    background: var(--primary-dark);
}

/* Utilities */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }

/* Badge Info */
.badge-info { 
    background: #dbeafe; 
    color: #1e40af; 
}

/* Responsive Grid for Forms */
@media (max-width: 768px) {
    form[style*="grid-template-columns"] {
        grid-template-columns: 1fr !important;
    }
}