:root {
    --primary: #2563EB;
    --primary-dark: #1D4ED8;
    --navy: #0F172A;
    --text: #111827;
    --muted: #6B7280;
    --bg: #F8FAFC;
    --white: #FFFFFF;
    --border: #E5E7EB;
    --error: #EF4444;
    --success: #10B981;
    --radius: 8px;
    --card-radius: 12px;
    --shadow: 0 2px 8px rgba(15, 23, 42, 0.08);
    --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
}

* {
    box-sizing: border-box;
}

html {
    font-family: var(--font-sans);
}

body {
    margin: 0;
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

button,
input,
optgroup,
select,
textarea,
.form-control,
.form-select,
.btn,
.dropdown-menu,
.modal-content,
.table,
.nav-link,
.page-link,
.badge,
.alert,
.card,
.list-group-item,
.toast {
    font-family: inherit;
}

.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: linear-gradient(135deg, #EFF6FF 0%, var(--bg) 50%, #F1F5F9 100%);
}

.auth-card {
    width: 100%;
    max-width: 420px;
    background: var(--white);
    border-radius: var(--card-radius);
    box-shadow: var(--shadow);
    padding: 32px;
}

.auth-brand {
    text-align: center;
    margin-bottom: 32px;
}

.auth-brand h1 {
    margin: 0 0 8px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--navy);
}

.auth-brand p {
    margin: 0;
    color: var(--muted);
    font-size: 0.95rem;
}

.form-label {
    font-weight: 500;
    color: var(--text);
    margin-bottom: 6px;
}

.form-control {
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: 10px 14px;
    font-size: 0.95rem;
}

.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.btn-primary {
    background: var(--primary);
    border: none;
    border-radius: var(--radius);
    padding: 10px 16px;
    font-weight: 600;
    transition: background 0.2s ease;
}

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

.btn-primary:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.alert {
    border-radius: var(--radius);
    font-size: 0.9rem;
    padding: 12px 14px;
    margin-bottom: 16px;
}

.alert-danger {
    background: #FEF2F2;
    color: #991B1B;
    border: 1px solid #FECACA;
}

.alert-success {
    background: #ECFDF5;
    color: #065F46;
    border: 1px solid #A7F3D0;
}

.alert-warning {
    background: #FFFBEB;
    color: #92400E;
    border: 1px solid #FDE68A;
}

.password-toggle {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--muted);
    cursor: pointer;
    padding: 0;
}

.input-group-wrap {
    position: relative;
}

.spinner-border-sm {
    width: 1rem;
    height: 1rem;
}

.auth-footer {
    text-align: center;
    margin-top: 24px;
    font-size: 0.85rem;
    color: var(--muted);
}

@media (max-width: 575.98px) {
    .auth-page {
        padding: 16px;
        align-items: flex-start;
        padding-top: 24px;
    }

    .auth-card {
        padding: 24px 20px;
        max-width: 100%;
    }

    .auth-brand h1 {
        font-size: 1.3rem;
    }

    .form-control {
        font-size: 16px;
    }
}

.requirements {
    font-size: 0.85rem;
    color: var(--muted);
    margin-top: 8px;
}

.requirements li {
    margin-bottom: 4px;
}

.dashboard-page {
    min-height: 100vh;
    background: var(--bg);
}

.dashboard-navbar {
    background: var(--white);
    height: 64px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
}

.dashboard-navbar h2 {
    margin: 0;
    font-size: 1.1rem;
    color: var(--navy);
}

.dashboard-content {
    max-width: 960px;
    margin: 32px auto;
    padding: 0 24px;
}

.welcome-card {
    background: var(--white);
    border-radius: var(--card-radius);
    box-shadow: var(--shadow);
    padding: 32px;
}

.welcome-card h3 {
    margin-top: 0;
    color: var(--navy);
}