:root {
    --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --bs-font-sans-serif: var(--font-sans);
    --bs-body-font-family: var(--font-sans);

    /* Harbor Slate palette */
    --color-ink: #0f172a;
    --color-ink-soft: #1e293b;
    --color-primary: #0d9488;
    --color-primary-hover: #0f766e;
    --color-primary-light: #5eead4;
    --color-primary-muted: #ccfbf1;
    --color-primary-subtle: rgb(13 148 136 / 0.12);
    --color-primary-glow: rgb(13 148 136 / 0.18);
    --color-accent: #38bdf8;
    --color-muted: #64748b;
    --color-muted-strong: #475569;
    --color-border: #e2e8f0;
    --color-surface: #ffffff;
    --color-surface-raised: #f8fafc;
    --color-surface-muted: #f1f5f9;
    --landing-dark: var(--color-ink-soft);
    --landing-accent: var(--color-primary);

    /* Bootstrap theme overrides */
    --bs-primary: var(--color-primary);
    --bs-primary-rgb: 13, 148, 136;
    --bs-secondary: #64748b;
    --bs-secondary-rgb: 100, 116, 139;
    --bs-body-color: var(--color-ink-soft);
    --bs-body-color-rgb: 30, 41, 59;
    --bs-body-bg: var(--color-surface);
    --bs-body-bg-rgb: 255, 255, 255;
    --bs-secondary-color: var(--color-muted);
    --bs-secondary-bg: var(--color-surface-muted);
    --bs-border-color: var(--color-border);
    --bs-link-color: var(--color-primary-hover);
    --bs-link-color-rgb: 15, 118, 110;
    --bs-link-hover-color: #115e59;
    --bs-link-hover-color-rgb: 17, 94, 89;
    --bs-primary-text-emphasis: #115e59;
    --bs-primary-bg-subtle: var(--color-primary-muted);
    --bs-primary-border-subtle: #99f6e4;
    --bs-focus-ring-color: rgb(13 148 136 / 0.25);
}

body {
    font-family: var(--font-sans);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

.landing-shell {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background-color: var(--color-surface);
}

.landing-header {
    position: sticky;
    top: 0;
    z-index: 1020;
    background-color: rgb(255 255 255 / 0.92);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--color-border);
}

.landing-header .navbar {
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
}

.site-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
}

.site-logo {
    width: 2rem;
    height: 2rem;
    flex-shrink: 0;
    display: block;
}

.landing-brand {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--landing-dark);
    letter-spacing: -0.02em;
}

.landing-brand:hover {
    color: var(--landing-accent);
}

.landing-brand:hover .site-logo {
    filter: drop-shadow(0 0 6px rgb(13 148 136 / 0.45));
}

.landing-footer {
    margin-top: auto;
    padding: 1.25rem 0;
    border-top: 1px solid var(--color-border);
    background-color: var(--color-surface);
}

.landing-footer-brand {
    font-weight: 700;
    color: var(--landing-dark);
}

.login-section {
    display: flex;
    align-items: center;
    flex: 1;
    min-height: calc(100vh - 8rem);
    padding: 2rem 0;
}

.login-card {
    max-width: 28rem;
    margin: 0 auto;
}

.login-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3.5rem;
    height: 3.5rem;
    margin-bottom: 0.75rem;
    border-radius: 50%;
    background-color: var(--color-primary-subtle);
    color: var(--landing-accent);
    font-size: 1.75rem;
}

.dashboard-card {
    border: 1px solid var(--color-border);
    box-shadow: 0 1px 2px rgb(15 23 42 / 0.04);
}

.btn-primary {
    --bs-btn-bg: var(--color-primary);
    --bs-btn-border-color: var(--color-primary);
    --bs-btn-hover-bg: var(--color-primary-hover);
    --bs-btn-hover-border-color: var(--color-primary-hover);
    --bs-btn-active-bg: #115e59;
    --bs-btn-active-border-color: #115e59;
    --bs-btn-disabled-bg: var(--color-primary);
    --bs-btn-disabled-border-color: var(--color-primary);
    box-shadow: 0 4px 14px rgb(13 148 136 / 0.22);
}

.btn-primary:hover,
.btn-primary:focus-visible {
    box-shadow: 0 6px 20px rgb(13 148 136 / 0.32);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--color-primary-light);
    box-shadow: 0 0 0 0.25rem var(--bs-focus-ring-color);
}

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

.form-check-input:focus {
    border-color: var(--color-primary-light);
    box-shadow: 0 0 0 0.25rem var(--bs-focus-ring-color);
}