/* Modern CSS Reset & Base Styles */
*, *::before, *::after {
    box-sizing: border-box;
}

/* Admin Dropdown Navigation */
.admin-dropdown {
    position: relative;
}

.admin-toggle {
    cursor: pointer;
}

.admin-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.15);
    padding: 0.5rem;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.2s ease;
    z-index: 1000;
}

.admin-dropdown:hover .admin-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.admin-menu a {
    display: block;
    padding: 0.75rem 1rem;
    color: #475569;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.15s ease;
}

.admin-menu a:hover {
    background: rgba(99, 102, 241, 0.08);
    color: #6366f1;
}

:root {
    /* Color Palette */
    --primary-50: #eef2ff;
    --primary-100: #e0e7ff;
    --primary-200: #c7d2fe;
    --primary-300: #a5b4fc;
    --primary-400: #818cf8;
    --primary-500: #6366f1;
    --primary-600: #4f46e5;
    --primary-700: #4338ca;
    --primary-800: #3730a3;
    --primary-900: #312e81;

    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;

    --success-500: #22c55e;
    --error-500: #ef4444;
    --warning-500: #f59e0b;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.15);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
}

html {
    scroll-behavior: smooth;
}

html, body {
    margin: 0;
    padding: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-800);
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--gray-200) 100%);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    margin: 0 0 1rem 0;
    font-weight: 700;
    line-height: 1.2;
    color: var(--gray-900);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
    margin: 0 0 1rem 0;
    color: var(--gray-600);
}

/* Links */
a {
    color: var(--primary-500);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-600);
}

/* Buttons */
.btn, button[type="submit"] {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.95rem;
    font-weight: 600;
    font-family: inherit;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(255,255,255,0.15), transparent);
    pointer-events: none;
}

.btn-primary, .btn.btn-primary, button.btn-primary {
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
    color: white;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.45);
    transform: translateY(-2px);
}

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

.btn-secondary {
    background: white;
    color: var(--gray-700);
    border: 1px solid var(--gray-300);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background: var(--gray-50);
    border-color: var(--gray-400);
    box-shadow: var(--shadow-md);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
    border-radius: var(--radius-lg);
}

.w-100 {
    width: 100%;
}

/* Form Controls */
.form-control, .form-select {
    width: 100%;
    padding: 0.875rem 1rem;
    font-size: 1rem;
    font-family: inherit;
    color: var(--gray-800);
    background: white;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    outline: none;
}

.form-control:hover {
    border-color: var(--gray-300);
}

.form-control:focus {
    border-color: var(--primary-400);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

.form-control::placeholder {
    color: var(--gray-400);
}

/* Floating Labels */
.form-floating {
    position: relative;
}

.form-floating > .form-control {
    height: 3.75rem;
    padding: 1.5rem 1rem 0.5rem 1rem;
}

.form-floating > label {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    padding: 1.125rem 1rem;
    pointer-events: none;
    transform-origin: 0 0;
    transition: all var(--transition-fast);
    color: var(--gray-500);
    font-size: 1rem;
}

.form-floating > .form-control:focus ~ label,
.form-floating > .form-control:not(:placeholder-shown) ~ label {
    transform: scale(0.75) translateY(-0.75rem);
    color: var(--primary-500);
}

.form-floating > .form-control-plaintext::placeholder,
.form-floating > .form-control::placeholder {
    color: transparent;
}

/* Form Groups */
.mb-3 {
    margin-bottom: 1.25rem;
}

/* Checkboxes */
.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-check-input {
    width: 1.25rem;
    height: 1.25rem;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    accent-color: var(--primary-500);
}

.form-check-input:checked {
    background-color: var(--primary-500);
    border-color: var(--primary-500);
}

.form-check-input:focus {
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15);
}

.form-label {
    font-weight: 500;
    color: var(--gray-700);
}

/* Validation */
.valid.modified:not([type=checkbox]) {
    border-color: var(--success-500);
}

.invalid, .is-invalid {
    border-color: var(--error-500) !important;
}

.validation-message, .text-danger {
    color: var(--error-500);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* Cards */
.card {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(0, 0, 0, 0.05);
    overflow: hidden;
    transition: all var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
}

.card-body {
    padding: 2rem;
}

/* Auth Card - Special styling for login/register */
.auth-card {
    max-width: 440px;
    margin: 2rem auto;
    animation: scaleIn 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.auth-card .card-body {
    padding: 2.5rem;
}

.auth-card h1, .auth-card h2 {
    text-align: center;
    margin-bottom: 2rem;
    background: linear-gradient(135deg, var(--gray-800) 0%, var(--gray-600) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Dividers */
hr {
    border: none;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--gray-300), transparent);
    margin: 1.5rem 0;
}

/* Alerts & Status Messages */
.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.alert-success {
    background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.alert-danger {
    background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%);
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-info {
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
    color: #1e40af;
    border: 1px solid #93c5fd;
}

/* Blazor Error Boundary */
.blazor-error-boundary {
    background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%);
    padding: 1.25rem;
    border-radius: var(--radius-md);
    color: #991b1b;
    border: 1px solid #fecaca;
}

.blazor-error-boundary::after {
    content: "An error has occurred.";
}

/* Focus States */
.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.2);
    outline: none;
}

/* Prevent black buttons on click/focus - Bootstrap override */
.btn:focus,
.btn:active,
.btn:focus:active,
.btn-primary:focus,
.btn-primary:active,
.btn-primary:focus:active,
.btn-secondary:focus,
.btn-secondary:active,
.btn-secondary:focus:active {
    background-color: inherit;
    color: inherit;
}

.btn-primary:focus,
.btn-primary:active,
.btn-primary:focus:active {
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%) !important;
    color: white !important;
}

.btn-secondary:focus,
.btn-secondary:active,
.btn-secondary:focus:active {
    background: var(--gray-50) !important;
    color: var(--gray-700) !important;
}

.btn-save:focus,
.btn-save:active {
    background: #4f46e5 !important;
    color: white !important;
}

.btn-cancel:focus,
.btn-cancel:active {
    background: #f3f4f6 !important;
    color: #374151 !important;
}

h1:focus {
    outline: none;
}

/* Content area */
.content {
    padding-top: 0;
}

/* Link Styling */
.btn-link {
    background: none;
    border: none;
    color: var(--primary-500);
    padding: 0;
    font-weight: 500;
    cursor: pointer;
}

.btn-link:hover {
    color: var(--primary-600);
    text-decoration: underline;
}

/* Row & Column Layout */
.row {
    display: flex;
    flex-wrap: wrap;
    margin: -0.75rem;
}

.col-lg-4, .col-lg-6 {
    padding: 0.75rem;
    width: 100%;
}

@media (min-width: 992px) {
    .col-lg-4 { width: 33.333%; }
    .col-lg-6 { width: 50%; }
}

/* Utility Classes */
.text-center { text-align: center; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mb-4 { margin-bottom: 1.5rem; }
.px-4 { padding-left: 1.5rem; padding-right: 1.5rem; }

/* Page Transitions */
.page-fade-in {
    animation: pageFadeIn 0.3s ease-out forwards;
}

@keyframes pageFadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Hover Lift Effect */
.hover-lift {
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

/* Glass Effect */
.glass {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

/* Loading Spinner */
.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--gray-200);
    border-top-color: var(--primary-500);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Pulse Animation */
.pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Dark checkbox border */
.darker-border-checkbox.form-check-input {
    border-color: var(--gray-400);
}

/* Add Inter font */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* Global Modal Styles - Uses inset for full viewport coverage */
.shift-modal-overlay {
    position: fixed !important;
    inset: 0 !important;
    background-color: rgba(0, 0, 0, 0.5) !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    z-index: 99999 !important;
    isolation: isolate;
}

.shift-modal {
    position: relative;
    background: #fff;
    border-radius: 10px;
    width: 440px;
    max-width: calc(100vw - 32px);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.shift-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    border-bottom: 1px solid #e5e7eb;
    background: #f9fafb;
    border-radius: 10px 10px 0 0;
}

.shift-modal-header h2 {
    margin: 0;
    font-size: 0.9rem;
    font-weight: 600;
    color: #111827;
}

.shift-modal-close {
    background: none;
    border: none;
    font-size: 1.2rem;
    color: #9ca3af;
    cursor: pointer;
    padding: 0;
    line-height: 1;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
}

.shift-modal-close:hover {
    background: #e5e7eb;
    color: #374151;
}

.shift-modal-body {
    padding: 12px 14px 14px;
}

.shift-form-row {
    display: flex;
    gap: 8px;
    margin-bottom: 8px;
}

.shift-form-group {
    flex: 1;
    min-width: 0;
}

.shift-form-group.flex-2 {
    flex: 2;
}

.shift-form-group label {
    display: block;
    font-size: 0.6rem;
    font-weight: 700;
    color: #6b7280;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 3px;
}

.shift-form-group input,
.shift-form-group select {
    display: block;
    width: 100%;
    padding: 6px 8px;
    border: 1px solid #d1d5db;
    border-radius: 5px;
    font-size: 0.8rem;
    color: #111827;
    background: #fff;
    box-sizing: border-box;
}

.shift-form-group input:focus,
.shift-form-group select:focus {
    outline: none;
    border-color: #6366f1;
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

.shift-form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    padding-top: 12px;
    margin-top: 4px;
}

.btn-cancel {
    padding: 6px 14px;
    background: #fff;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 500;
    color: #374151;
    cursor: pointer;
}

.btn-cancel:hover {
    background: #f3f4f6;
}

.btn-save {
    padding: 6px 16px;
    background: #6366f1;
    border: none;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    color: #fff;
    cursor: pointer;
}

.btn-save:hover {
    background: #4f46e5;
}

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