/* =================================================================
   Intranet Portal — Material Design 3 Theme System
   ================================================================= */

/* --- CSS Custom Properties (M3 Color Tokens) --- */
:root {
    /* Primary brand colors */
    --md-sys-color-primary: #121F38;
    --md-sys-color-on-primary: #FFFFFF;
    --md-sys-color-primary-container: #D4E3FF;
    --md-sys-color-on-primary-container: #001C3A;

    /* Secondary */
    --md-sys-color-secondary: #054549;
    --md-sys-color-on-secondary: #FFFFFF;
    --md-sys-color-secondary-container: #CCE8E9;
    --md-sys-color-on-secondary-container: #002021;

    /* Tertiary */
    --md-sys-color-tertiary: #217655;
    --md-sys-color-on-tertiary: #FFFFFF;
    --md-sys-color-tertiary-container: #A8F5D5;
    --md-sys-color-on-tertiary-container: #002117;

    /* Error */
    --md-sys-color-error: #BA1A1A;
    --md-sys-color-on-error: #FFFFFF;
    --md-sys-color-error-container: #FFDAD6;
    --md-sys-color-on-error-container: #410002;

    /* Accent */
    --md-sys-color-accent: #FF7350;
    --md-sys-color-on-accent: #FFFFFF;

    /* Surface */
    --md-sys-color-surface: #FFFFFF;
    --md-sys-color-on-surface: #1C1B1F;
    --md-sys-color-surface-variant: #E7E0EC;
    --md-sys-color-on-surface-variant: #49454F;
    --md-sys-color-surface-container: #F3F3F3;
    --md-sys-color-surface-container-low: #F8F8F8;
    --md-sys-color-surface-container-high: #ECE6F0;
    --md-sys-color-surface-container-highest: #E6E1E5;

    /* Outline */
    --md-sys-color-outline: #79747E;
    --md-sys-color-outline-variant: #CAC4D0;

    /* Inverse */
    --md-sys-color-inverse-surface: #313033;
    --md-sys-color-inverse-on-surface: #F4EFF4;

    /* Shape */
    --md-sys-shape-corner-extra-small: 4px;
    --md-sys-shape-corner-small: 8px;
    --md-sys-shape-corner-medium: 12px;
    --md-sys-shape-corner-large: 16px;
    --md-sys-shape-corner-extra-large: 28px;
    --md-sys-shape-corner-full: 9999px;

    /* Elevation */
    --md-sys-elevation-level0: none;
    --md-sys-elevation-level1: 0 1px 3px 1px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.12);
    --md-sys-elevation-level2: 0 2px 6px 2px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.12);
    --md-sys-elevation-level3: 0 4px 8px 3px rgba(0, 0, 0, 0.08), 0 1px 3px rgba(0, 0, 0, 0.12);
    --md-sys-elevation-level4: 0 6px 10px 4px rgba(0, 0, 0, 0.08), 0 2px 3px rgba(0, 0, 0, 0.12);
    --md-sys-elevation-level5: 0 8px 12px 6px rgba(0, 0, 0, 0.08), 0 4px 4px rgba(0, 0, 0, 0.12);

    /* Sidebar */
    --sidebar-width: 280px;
    --topbar-height: 64px;
}


/* --- Typography --- */
@import url('https://fonts.googleapis.com/css2?family=Work+Sans:wght@300;400;500;600;700&display=swap');

body {
    font-family: 'Work Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--md-sys-color-on-surface);
    background-color: var(--md-sys-color-surface-container-low);
}

.md3-display-large  { font-size: 57px; line-height: 64px; font-weight: 400; letter-spacing: -0.25px; }
.md3-display-medium { font-size: 45px; line-height: 52px; font-weight: 400; }
.md3-display-small  { font-size: 36px; line-height: 44px; font-weight: 400; }

.md3-headline-large  { font-size: 32px; line-height: 40px; font-weight: 400; }
.md3-headline-medium { font-size: 28px; line-height: 36px; font-weight: 400; }
.md3-headline-small  { font-size: 24px; line-height: 32px; font-weight: 400; }

.md3-title-large  { font-size: 22px; line-height: 28px; font-weight: 500; }
.md3-title-medium { font-size: 16px; line-height: 24px; font-weight: 500; letter-spacing: 0.15px; }
.md3-title-small  { font-size: 14px; line-height: 20px; font-weight: 500; letter-spacing: 0.1px; }

.md3-body-large  { font-size: 16px; line-height: 24px; font-weight: 400; letter-spacing: 0.5px; }
.md3-body-medium { font-size: 14px; line-height: 20px; font-weight: 400; letter-spacing: 0.25px; }
.md3-body-small  { font-size: 12px; line-height: 16px; font-weight: 400; letter-spacing: 0.4px; }

.md3-label-large  { font-size: 14px; line-height: 20px; font-weight: 500; letter-spacing: 0.1px; }
.md3-label-medium { font-size: 12px; line-height: 16px; font-weight: 500; letter-spacing: 0.5px; }
.md3-label-small  { font-size: 11px; line-height: 16px; font-weight: 500; letter-spacing: 0.5px; }


/* --- Buttons --- */
.md3-btn-filled {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 24px;
    border: none;
    border-radius: var(--md-sys-shape-corner-full);
    background-color: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    font-family: inherit;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.1px;
    text-decoration: none;
    cursor: pointer;
    transition: box-shadow 0.2s, background-color 0.2s;
}
.md3-btn-filled:hover {
    box-shadow: var(--md-sys-elevation-level1);
    background-color: #1a2d4d;
    color: var(--md-sys-color-on-primary);
    text-decoration: none;
}
.md3-btn-filled:active { background-color: #0d1526; }
.md3-btn-filled:disabled { background-color: rgba(28, 27, 31, 0.12); color: rgba(28, 27, 31, 0.38); cursor: default; }
.md3-btn-filled .material-symbols-outlined { font-size: 18px; }

.md3-btn-outlined {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 24px;
    border: 1px solid var(--md-sys-color-outline);
    border-radius: var(--md-sys-shape-corner-full);
    background-color: transparent;
    color: var(--md-sys-color-primary);
    font-family: inherit;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.1px;
    text-decoration: none;
    cursor: pointer;
    transition: background-color 0.2s;
}
.md3-btn-outlined:hover { background-color: rgba(18, 31, 56, 0.08); color: var(--md-sys-color-primary); text-decoration: none; }
.md3-btn-outlined .material-symbols-outlined { font-size: 18px; }

.md3-btn-text {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 16px;
    border: none;
    border-radius: var(--md-sys-shape-corner-full);
    background-color: transparent;
    color: var(--md-sys-color-primary);
    font-family: inherit;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.1px;
    text-decoration: none;
    cursor: pointer;
    transition: background-color 0.2s;
}
.md3-btn-text:hover { background-color: rgba(18, 31, 56, 0.08); color: var(--md-sys-color-primary); text-decoration: none; }

.md3-btn-tonal {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 24px;
    border: none;
    border-radius: var(--md-sys-shape-corner-full);
    background-color: var(--md-sys-color-secondary-container);
    color: var(--md-sys-color-on-secondary-container);
    font-family: inherit;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.1px;
    text-decoration: none;
    cursor: pointer;
    transition: box-shadow 0.2s, background-color 0.2s;
}
.md3-btn-tonal:hover { box-shadow: var(--md-sys-elevation-level1); text-decoration: none; }

.md3-btn-danger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 24px;
    border: none;
    border-radius: var(--md-sys-shape-corner-full);
    background-color: var(--md-sys-color-error);
    color: var(--md-sys-color-on-error);
    font-family: inherit;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: box-shadow 0.2s;
}
.md3-btn-danger:hover { box-shadow: var(--md-sys-elevation-level1); }


/* --- Cards --- */
.md3-card {
    background-color: var(--md-sys-color-surface);
    border-radius: var(--md-sys-shape-corner-medium);
    padding: 24px;
    border: 1px solid var(--md-sys-color-outline-variant);
}

.md3-card-elevated {
    background-color: var(--md-sys-color-surface);
    border-radius: var(--md-sys-shape-corner-medium);
    padding: 24px;
    box-shadow: var(--md-sys-elevation-level1);
    border: none;
    transition: box-shadow 0.2s;
}
.md3-card-elevated:hover { box-shadow: var(--md-sys-elevation-level2); }

.md3-card-filled {
    background-color: var(--md-sys-color-surface-container-highest);
    border-radius: var(--md-sys-shape-corner-medium);
    padding: 24px;
    border: none;
}

.md3-card-clickable {
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: block;
}
.md3-card-clickable:hover { color: inherit; text-decoration: none; }


/* --- Form Controls (M3 style) --- */
.md3-text-field {
    position: relative;
    margin-bottom: 1rem;
}

.md3-text-field .form-control,
.md3-text-field .form-select {
    border: 1px solid var(--md-sys-color-outline);
    border-radius: var(--md-sys-shape-corner-extra-small);
    padding: 16px;
    font-size: 16px;
    line-height: 24px;
    background-color: transparent;
    transition: border-color 0.2s;
}
.md3-text-field .form-control:focus,
.md3-text-field .form-select:focus {
    border-color: var(--md-sys-color-primary);
    border-width: 2px;
    padding: 15px;
    box-shadow: none;
}
.md3-text-field label {
    font-size: 12px;
    font-weight: 500;
    color: var(--md-sys-color-on-surface-variant);
    margin-bottom: 4px;
    letter-spacing: 0.5px;
}


/* --- Badges --- */
.md3-badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    border-radius: var(--md-sys-shape-corner-full);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.5px;
}
.md3-badge-success {
    background-color: var(--md-sys-color-tertiary-container);
    color: var(--md-sys-color-on-tertiary-container);
}
.md3-badge-error {
    background-color: var(--md-sys-color-error-container);
    color: var(--md-sys-color-on-error-container);
}
.md3-badge-info {
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
}
.md3-badge-warning {
    background-color: #FFF3E0;
    color: #E65100;
}


/* --- Tables --- */
.md3-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background-color: var(--md-sys-color-surface);
    border-radius: var(--md-sys-shape-corner-medium);
    overflow: hidden;
    box-shadow: var(--md-sys-elevation-level1);
}
.md3-table thead th {
    background-color: var(--md-sys-color-surface-container);
    color: var(--md-sys-color-on-surface-variant);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    padding: 12px 16px;
    border-bottom: 1px solid var(--md-sys-color-outline-variant);
}
.md3-table tbody td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--md-sys-color-outline-variant);
    vertical-align: middle;
}
.md3-table tbody tr:last-child td { border-bottom: none; }
.md3-table tbody tr:hover { background-color: rgba(18, 31, 56, 0.04); }


/* --- Snackbar / Flash Messages --- */
.md3-snackbar {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 9999;
    min-width: 320px;
    max-width: 560px;
    padding: 14px 24px;
    border-radius: var(--md-sys-shape-corner-small);
    font-size: 14px;
    font-weight: 400;
    letter-spacing: 0.25px;
    display: flex;
    align-items: center;
    gap: 12px;
    animation: snackbar-in 0.3s ease-out;
}
.md3-snackbar-success {
    background-color: var(--md-sys-color-inverse-surface);
    color: var(--md-sys-color-inverse-on-surface);
}
.md3-snackbar-error {
    background-color: var(--md-sys-color-error);
    color: var(--md-sys-color-on-error);
}
.md3-snackbar .btn-close-snackbar {
    margin-left: auto;
    background: none;
    border: none;
    color: inherit;
    opacity: 0.7;
    cursor: pointer;
    font-size: 18px;
}
.md3-snackbar .btn-close-snackbar:hover { opacity: 1; }

@keyframes snackbar-in {
    from { opacity: 0; transform: translateX(-50%) translateY(20px); }
    to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}
@keyframes snackbar-out {
    from { opacity: 1; transform: translateX(-50%) translateY(0); }
    to   { opacity: 0; transform: translateX(-50%) translateY(20px); }
}


/* --- Divider --- */
.md3-divider {
    border: none;
    border-top: 1px solid var(--md-sys-color-outline-variant);
    margin: 16px 0;
}


/* --- Icon Button --- */
.md3-icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: none;
    border-radius: var(--md-sys-shape-corner-full);
    background: transparent;
    color: var(--md-sys-color-on-surface-variant);
    cursor: pointer;
    text-decoration: none;
    transition: background-color 0.2s;
}
.md3-icon-btn:hover { background-color: rgba(28, 27, 31, 0.08); color: var(--md-sys-color-on-surface); text-decoration: none; }
.md3-icon-btn .material-symbols-outlined { font-size: 24px; }


/* --- Toggle / Switch --- */
.md3-switch {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
}
.md3-switch input[type="checkbox"] { display: none; }
.md3-switch-track {
    width: 52px;
    height: 32px;
    background-color: var(--md-sys-color-surface-variant);
    border: 2px solid var(--md-sys-color-outline);
    border-radius: var(--md-sys-shape-corner-full);
    position: relative;
    transition: background-color 0.2s, border-color 0.2s;
}
.md3-switch-thumb {
    width: 16px;
    height: 16px;
    background-color: var(--md-sys-color-outline);
    border-radius: var(--md-sys-shape-corner-full);
    position: absolute;
    top: 50%;
    left: 6px;
    transform: translateY(-50%);
    transition: left 0.2s, width 0.2s, height 0.2s, background-color 0.2s;
}
.md3-switch input:checked ~ .md3-switch-track {
    background-color: var(--md-sys-color-primary);
    border-color: var(--md-sys-color-primary);
}
.md3-switch input:checked ~ .md3-switch-track .md3-switch-thumb {
    left: 28px;
    width: 24px;
    height: 24px;
    background-color: var(--md-sys-color-on-primary);
}


/* --- Alert / Info Box --- */
.md3-alert {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 16px;
    border-radius: var(--md-sys-shape-corner-small);
    font-size: 14px;
}
.md3-alert-info {
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
}
.md3-alert-warning {
    background-color: #FFF3E0;
    color: #E65100;
}
.md3-alert-error {
    background-color: var(--md-sys-color-error-container);
    color: var(--md-sys-color-on-error-container);
}
.md3-alert-success {
    background-color: var(--md-sys-color-tertiary-container);
    color: var(--md-sys-color-on-tertiary-container);
}
.md3-alert .material-symbols-outlined { flex-shrink: 0; }