/* ============================================
   CSS Variables - Premium Design Tokens
   ============================================ */
:root {
    /* Colors - Dark Theme */
    --color-bg-primary: #0f0f14;
    --color-bg-secondary: #16161d;
    --color-bg-tertiary: #1c1c26;
    --color-bg-card: rgba(28, 28, 38, 0.8);
    --color-bg-glass: rgba(255, 255, 255, 0.03);

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

    /* Primary - Electric Blue */
    --color-primary-400: #60a5fa;
    --color-primary-500: #3b82f6;
    --color-primary-600: #2563eb;
    --color-primary-700: #1d4ed8;

    /* Status Colors */
    --color-success-400: #4ade80;
    --color-success-500: #22c55e;
    --color-success-600: #16a34a;
    --color-success-bg: rgba(34, 197, 94, 0.1);

    --color-danger-400: #f87171;
    --color-danger-500: #ef4444;
    --color-danger-600: #dc2626;
    --color-danger-bg: rgba(239, 68, 68, 0.1);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;

    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.25rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.6);

    /* Glass Effect */
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-blur: blur(20px);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-gray-200);
    background: var(--color-bg-primary);
    min-height: 100vh;
}

a {
    color: var(--color-primary-400);
    text-decoration: none;
}

a:hover {
    color: var(--color-primary-500);
}

h1,
h2,
h3 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-white);
}

h1 {
    font-size: var(--font-size-3xl);
}

h2 {
    font-size: var(--font-size-xl);
}

h3 {
    font-size: var(--font-size-lg);
}

p {
    color: var(--color-gray-400);
}

/* ============================================
   Auth Page (Login)
   ============================================ */
.auth-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: var(--spacing-4);
    background: var(--color-bg-primary);
}

.auth-container {
    width: 100%;
    max-width: 440px;
}

.auth-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-12);
    box-shadow: var(--shadow-xl);
}

.auth-header {
    text-align: center;
    margin-bottom: var(--spacing-8);
}

.auth-header .logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 72px;
    height: 72px;
    background: var(--color-primary-500);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-6);
}

.auth-header h1 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-2);
}

.auth-header p {
    font-size: var(--font-size-sm);
}

/* Form Styles */
.form-group {
    margin-bottom: var(--spacing-5);
}

.form-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-gray-300);
    margin-bottom: var(--spacing-2);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: var(--spacing-4);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    color: var(--color-white);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    outline: none;
}

.form-group input::placeholder {
    color: var(--color-gray-500);
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--color-primary-500);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-5);
    font-size: var(--font-size-sm);
    font-weight: 500;
    font-family: var(--font-family);
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
}

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

.btn-primary {
    color: var(--color-white);
    background: var(--color-primary-500);
}

.btn-primary:hover:not(:disabled) {
    background: var(--color-primary-600);
}

.btn-success {
    color: var(--color-white);
    background: var(--color-success-500);
}

.btn-success:hover:not(:disabled) {
    background: var(--color-success-600);
}

.btn-danger {
    color: var(--color-white);
    background: var(--color-danger-500);
}

.btn-danger:hover:not(:disabled) {
    background: var(--color-danger-600);
}

.btn-outline {
    color: var(--color-gray-300);
    background: transparent;
    border: 1px solid var(--glass-border);
}

.btn-outline:hover:not(:disabled) {
    background: var(--glass-bg);
    color: var(--color-white);
}

.btn-ghost {
    color: var(--color-gray-400);
    background: transparent;
    padding: var(--spacing-2);
}

.btn-ghost:hover:not(:disabled) {
    color: var(--color-white);
    background: var(--glass-bg);
}

.btn-ghost.btn-danger-ghost:hover:not(:disabled) {
    color: var(--color-danger-400);
    background: var(--color-danger-bg);
}

.btn-ghost.btn-primary-ghost:hover:not(:disabled) {
    color: var(--color-primary-400);
    background: rgba(59, 130, 246, 0.1);
}

.btn-full {
    width: 100%;
}

.btn-sm {
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--font-size-xs);
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
}

.spinner {
    width: 18px;
    height: 18px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

/* Error/Success Messages */
.error-message {
    padding: var(--spacing-4);
    margin-bottom: var(--spacing-4);
    font-size: var(--font-size-sm);
    color: var(--color-danger-400);
    background: var(--color-danger-bg);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--color-danger-500);
}

.auth-footer {
    margin-top: var(--spacing-8);
    text-align: center;
    font-size: var(--font-size-sm);
}

.auth-footer p {
    color: var(--color-gray-500);
}

/* ============================================
   Dashboard Layout
   ============================================ */
.dashboard-page {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background: var(--color-bg-primary);
}

.dashboard-header {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--glass-border);
    padding: var(--spacing-4) var(--spacing-6);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1400px;
    margin: 0 auto;
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.header-left .logo-small {
    width: 40px;
    height: 40px;
    background: var(--color-primary-500);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.header-left h1 {
    font-size: var(--font-size-lg);
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.user-email {
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
    padding: var(--spacing-2) var(--spacing-4);
    background: var(--glass-bg);
    border-radius: var(--radius-full);
    border: 1px solid var(--glass-border);
}

/* Main Content */
.dashboard-main {
    flex: 1;
    padding: var(--spacing-8);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

/* Cards */
.card {
    background: var(--color-bg-card);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    border: 1px solid var(--glass-border);
    margin-bottom: var(--spacing-6);
    overflow: hidden;
}

.card:hover {
    border-color: rgba(255, 255, 255, 0.15);
}

.card-header {
    padding: var(--spacing-6);
    border-bottom: 1px solid var(--glass-border);
    background: var(--glass-bg);
}

.card-header h2 {
    margin-bottom: var(--spacing-1);
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.card-header h2::before {
    content: '';
    width: 4px;
    height: 24px;
    background: var(--color-primary-500);
    border-radius: var(--radius-full);
}

.card-header p {
    font-size: var(--font-size-sm);
    padding-left: calc(4px + var(--spacing-3));
}

/* Form Grid */
.add-account-form {
    padding: var(--spacing-6);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-5);
}

.form-action {
    display: flex;
    align-items: flex-end;
}

.form-action .btn {
    width: 100%;
    padding: var(--spacing-4);
}

/* Data Table */
.table-container {
    overflow-x: auto;
}

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

.data-table th {
    background: var(--color-bg-tertiary);
    padding: var(--spacing-4) var(--spacing-5);
    text-align: left;
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-gray-400);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    border-bottom: 1px solid var(--glass-border);
}

.data-table td {
    padding: var(--spacing-4) var(--spacing-5);
    font-size: var(--font-size-sm);
    color: var(--color-gray-300);
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    vertical-align: middle;
}

.data-table tbody tr {
    transition: all var(--transition-fast);
}

.data-table tbody tr:nth-child(even) {
    background: var(--glass-bg);
}

.data-table tbody tr:hover {
    background: rgba(59, 130, 246, 0.05);
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

.data-table .cell-password {
    font-family: 'Consolas', monospace;
    font-size: var(--font-size-xs);
    padding: var(--spacing-2) var(--spacing-3);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-sm);
    color: var(--color-gray-400);
}

.cell-actions {
    display: flex;
    gap: var(--spacing-2);
    justify-content: flex-end;
}

.badge {
    display: inline-flex;
    padding: var(--spacing-1) var(--spacing-3);
    font-size: var(--font-size-xs);
    font-weight: 500;
    border-radius: var(--radius-full);
    text-transform: capitalize;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--color-gray-300);
}

/* Empty & Loading States */
.empty-state,
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-16);
    text-align: center;
    color: var(--color-gray-500);
}

.empty-state svg,
.loading-state svg {
    margin-bottom: var(--spacing-4);
    opacity: 0.5;
}

.empty-state p,
.loading-state p {
    font-size: var(--font-size-base);
    color: var(--color-gray-400);
    margin-bottom: var(--spacing-1);
}

.empty-state span {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: var(--spacing-4);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--color-bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9) translateY(20px);
    transition: transform var(--transition-base);
}

.modal-overlay.active .modal {
    transform: scale(1) translateY(0);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-6);
    border-bottom: 1px solid var(--glass-border);
}

.modal-header h3 {
    font-size: var(--font-size-lg);
}

.modal-body {
    padding: var(--spacing-6);
}

.modal-footer {
    display: flex;
    gap: var(--spacing-3);
    justify-content: flex-end;
    padding: var(--spacing-6);
    border-top: 1px solid var(--glass-border);
    background: var(--glass-bg);
}

/* Toast */
.toast-container {
    position: fixed;
    bottom: var(--spacing-6);
    right: var(--spacing-6);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-4) var(--spacing-5);
    background: var(--color-bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    min-width: 300px;
    max-width: 400px;
    transform: translateX(120%);
    transition: transform var(--transition-base);
}

.toast.show {
    transform: translateX(0);
}

.toast-icon {
    width: 24px;
    height: 24px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.toast-success .toast-icon {
    background: var(--color-success-bg);
    color: var(--color-success-400);
}

.toast-error .toast-icon {
    background: var(--color-danger-bg);
    color: var(--color-danger-400);
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-white);
}

.toast-message {
    font-size: var(--font-size-xs);
    color: var(--color-gray-400);
}

.toast-close {
    background: none;
    border: none;
    color: var(--color-gray-500);
    cursor: pointer;
    padding: var(--spacing-1);
}

.toast-close:hover {
    color: var(--color-white);
}

/* Footer */
.dashboard-footer {
    padding: var(--spacing-6);
    text-align: center;
    border-top: 1px solid var(--glass-border);
    background: var(--glass-bg);
}

.dashboard-footer p {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

/* Confirm Dialog */
.confirm-dialog {
    text-align: center;
    padding: var(--spacing-4);
}

.confirm-dialog .icon-warning {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-4);
    background: var(--color-danger-bg);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-danger-400);
}

.confirm-dialog h3 {
    margin-bottom: var(--spacing-2);
}

.confirm-dialog p {
    margin-bottom: var(--spacing-6);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .form-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .dashboard-header {
        padding: var(--spacing-3) var(--spacing-4);
    }

    .header-content {
        flex-direction: column;
        gap: var(--spacing-3);
    }

    .header-right {
        width: 100%;
        justify-content: space-between;
    }

    .dashboard-main {
        padding: var(--spacing-4);
    }

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

    .card-header,
    .add-account-form {
        padding: var(--spacing-4);
    }

    .data-table th,
    .data-table td {
        padding: var(--spacing-3);
    }

    .auth-card {
        padding: var(--spacing-6);
    }

    .auth-header h1 {
        font-size: var(--font-size-xl);
    }

    .user-email {
        display: none;
    }

    .cell-actions {
        flex-direction: column;
        gap: var(--spacing-1);
    }

    /* Modal - bottom sheet on mobile */
    .modal-overlay {
        padding: var(--spacing-3);
        align-items: flex-end;
    }

    .modal {
        max-width: 100%;
        max-height: 85vh;
        border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    }

    .modal-header,
    .modal-body {
        padding: var(--spacing-4);
    }

    .modal-footer {
        padding: var(--spacing-4);
        flex-direction: column;
        gap: var(--spacing-2);
    }

    .modal-footer .btn {
        width: 100%;
    }

    /* Toast on mobile */
    .toast-container {
        left: var(--spacing-4);
        right: var(--spacing-4);
        bottom: var(--spacing-4);
    }

    .toast {
        min-width: auto;
        max-width: none;
    }
}

/* Utilities */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

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

.text-danger {
    color: var(--color-danger-400);
}

.text-success {
    color: var(--color-success-400);
}