/**
 * Global Stylesheet & Design System
 * Modern, clean, responsive, dark/slate theme with crisp typography.
 */

:root {
    --bg-main: #0b0f19;
    --bg-surface: #111827;
    --bg-card: #1f2937;
    --bg-card-hover: #283548;
    --border-color: #374151;
    --border-focus: #6366f1;

    --text-primary: #f9fafb;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;

    --color-primary: #4f46e5;
    --color-primary-hover: #4338ca;
    --color-primary-light: #e0e7ff;

    --color-success: #10b981;
    --color-success-bg: rgba(16, 185, 129, 0.12);
    --color-warning: #f59e0b;
    --color-warning-bg: rgba(245, 158, 11, 0.12);
    --color-danger: #ef4444;
    --color-danger-bg: rgba(239, 68, 68, 0.12);
    --color-info: #0ea5e9;
    --color-info-bg: rgba(14, 165, 233, 0.12);

    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-full: 9999px;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.2), 0 2px 4px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.15);
    --shadow-glow: 0 0 25px rgba(79, 70, 229, 0.25);
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography Helpers */
.font-mono { font-family: var(--font-mono); }
.font-bold { font-weight: 700; }
.text-sm { font-size: 0.875rem; }
.text-muted { color: var(--text-muted); }
.text-primary { color: #818cf8; }
.text-success { color: #34d399; }
.text-warning { color: #fbbf24; }
.text-danger { color: #f87171; }
.text-center { text-align: center; }

/* Utilities */
.hidden { display: none !important; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.mt-4 { margin-top: 1.5rem; }
.py-4 { padding-top: 1.5rem; padding-bottom: 1.5rem; }

/* Selection Deterrent Class */
.no-select {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

/* Auth Container (Login Screens) */
.auth-body, .admin-auth-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 1.5rem;
    background: radial-gradient(circle at top center, #1e1b4b 0%, #0b0f19 70%);
}

.admin-auth-body {
    background: radial-gradient(circle at top center, #172554 0%, #0b0f19 70%);
}

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

.auth-brand {
    text-align: center;
    margin-bottom: 2rem;
}

.brand-shield {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, #4f46e5, #312e81);
    color: #ffffff;
    box-shadow: var(--shadow-glow);
    margin-bottom: 1rem;
}

.brand-shield.admin-shield {
    background: linear-gradient(135deg, #2563eb, #1e3a8a);
    box-shadow: 0 0 25px rgba(37, 99, 235, 0.25);
}

.brand-shield.mini {
    width: 34px;
    height: 34px;
    border-radius: var(--radius-sm);
    margin-bottom: 0;
}

.brand-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.025em;
}

.brand-subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

/* Auth Card */
.auth-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.25rem;
    box-shadow: var(--shadow-lg);
}

.card-header {
    text-align: center;
    margin-bottom: 1.75rem;
}

.card-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-header p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.35rem;
}

/* Alerts */
.alert {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    margin-bottom: 1.25rem;
    line-height: 1.4;
}

.alert svg {
    flex-shrink: 0;
}

.alert-error {
    background-color: var(--color-danger-bg);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #fca5a5;
}

.alert-success {
    background-color: var(--color-success-bg);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #6ee7b7;
}

/* Forms */
.auth-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.form-label {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 1rem;
    color: var(--text-muted);
    pointer-events: none;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.9375rem;
    font-family: inherit;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.input-wrapper .form-control {
    padding-left: 2.75rem;
}

.form-control:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25);
}

.code-input {
    font-family: var(--font-mono);
    font-size: 1.05rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.code-input::placeholder {
    font-family: var(--font-mono);
    text-transform: none;
    font-weight: 400;
    color: #4b5563;
    font-size: 0.9rem;
}

.form-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.15s ease;
    font-family: inherit;
}

.btn-block {
    width: 100%;
}

.btn-primary {
    background-color: var(--color-primary);
    color: #ffffff;
    box-shadow: 0 2px 4px rgba(79, 70, 229, 0.3);
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    transform: translateY(-1px);
}

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

.btn-secondary {
    background-color: var(--bg-card);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background-color: var(--bg-card-hover);
}

.btn-outline {
    background-color: transparent;
    border-color: var(--border-color);
    color: var(--text-secondary);
}

.btn-outline:hover {
    color: var(--text-primary);
    border-color: #6b7280;
}

.btn-outline-danger {
    background-color: transparent;
    border-color: rgba(239, 68, 68, 0.4);
    color: #fca5a5;
}

.btn-outline-danger:hover {
    background-color: var(--color-danger-bg);
    border-color: var(--color-danger);
    color: #ef4444;
}

.btn-sm {
    padding: 0.4rem 0.75rem;
    font-size: 0.8125rem;
}

.btn-xs {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    border-radius: var(--radius-sm);
}

/* Security Badge */
.security-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Footer in Auth */
.auth-footer {
    text-align: center;
    margin-top: 2rem;
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.admin-link-wrapper {
    margin-top: 0.5rem;
}

.admin-link {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.15s ease;
}

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

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.55rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.badge-confidential {
    background-color: rgba(239, 68, 68, 0.15);
    color: #f87171;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.badge-success {
    background-color: var(--color-success-bg);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-info {
    background-color: var(--color-info-bg);
    color: #38bdf8;
    border: 1px solid rgba(14, 165, 233, 0.3);
}

.badge-warning {
    background-color: var(--color-warning-bg);
    color: #fbbf24;
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-danger {
    background-color: var(--color-danger-bg);
    color: #f87171;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

/* Code Badge */
.code-badge {
    background-color: #0f172a;
    border: 1px solid #334155;
    padding: 0.2rem 0.45rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: #cbd5e1;
}

/* Responsive */
@media (max-width: 640px) {
    .auth-card {
        padding: 1.5rem;
    }
}