/* ============================================================
   ITC Dashboard — Design System
   Based on IT Confidence Brand Guide (Oct 2025)
   ============================================================ */

/* --- CSS Custom Properties (Brand Tokens) --- */
:root {
    /* Primary Brand Colors */
    --color-primary:           #1D3D59;   /* Marineblå */
    --color-primary-80:        #4A647A;
    --color-primary-60:        #778B9B;
    --color-primary-40:        #A5B1BD;
    --color-primary-20:        #D2D8DE;

    --color-secondary:         #657EA0;   /* Skiferblå */
    --color-secondary-80:      #8498B3;
    --color-secondary-60:      #A3B2C6;
    --color-secondary-40:      #C1CBD9;
    --color-secondary-20:      #E0E5EC;

    --color-near-black:        #1D1D1B;   /* Nærsort */
    --color-near-black-80:     #4A4A49;
    --color-near-black-60:     #777776;
    --color-near-black-40:     #A5A5A4;
    --color-near-black-20:     #D2D2D1;

    --color-grey-mid:          #B2B2B2;   /* Mellemgrå K40 */
    --color-grey-mid-80:       #C1C1C1;
    --color-grey-mid-60:       #D1D1D1;
    --color-grey-mid-40:       #E0E0E0;
    --color-grey-mid-20:       #F0F0F0;

    --color-grey-warm:         #B5B2B2;   /* Varm lysegrå */
    --color-grey-warm-80:      #C4C1C1;
    --color-grey-warm-60:      #D3D1D1;
    --color-grey-warm-40:      #E1E0E0;
    --color-grey-warm-20:      #F0F0F0;

    --color-sand:              #D2CDBC;   /* SAND */
    --color-sand-80:           #DBD7C9;
    --color-sand-60:           #E4E1D7;
    --color-sand-40:           #EDEBE4;
    --color-sand-20:           #F6F5F2;

    --color-accent-gold:       #DEAB52;   /* Gylden okker */
    --color-accent-gold-80:    #E5BC75;
    --color-accent-gold-60:    #EBCD97;
    --color-accent-gold-40:    #F2DDBA;
    --color-accent-gold-20:    #F8EEDC;

    --color-accent-magenta:    #B06693;   /* Støvet magenta */
    --color-accent-magenta-80: #C085A9;
    --color-accent-magenta-60: #D0A3BE;
    --color-accent-magenta-40: #DFC2D4;
    --color-accent-magenta-20: #EFE0E9;

    /* Functional Colors */
    --color-text:              #5B5755;   /* Primary body text */
    --color-cta:               #141F72;   /* Clickable elements ONLY */
    --color-h2-accent:         #88AAB8;   /* H2 subheadings, dividers */
    --color-heading:           #1D3D59;   /* H1/H3 headings */

    /* Semantic Colors */
    --color-success:           #2E7D4F;
    --color-success-bg:        #E8F5E9;
    --color-warning:           #DEAB52;
    --color-warning-bg:        #FFF8E1;
    --color-danger:            #C62828;
    --color-danger-bg:         #FFEBEE;
    --color-info:              #657EA0;
    --color-info-bg:           #E0E5EC;

    /* Layout Colors */
    --color-bg-page:           #F6F5F2;   /* SAND 20% */
    --color-bg-card:           #FFFFFF;
    --color-bg-sidebar:        #1D3D59;
    --color-text-sidebar:      #FFFFFF;
    --color-hover-sidebar:     #4A647A;
    --color-active-sidebar:    #4A647A;
    --color-border:            #E0E0E0;
    --color-border-light:      #EDEBE4;

    /* Typography */
    --font-ui:    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-nav:   'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono:  'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;

    /* Spacing Scale */
    --space-xs:  0.25rem;   /* 4px */
    --space-sm:  0.5rem;    /* 8px */
    --space-md:  1rem;      /* 16px */
    --space-lg:  1.5rem;    /* 24px */
    --space-xl:  2rem;      /* 32px */
    --space-2xl: 3rem;      /* 48px */

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm:  0 1px 2px rgba(29,61,89,0.06);
    --shadow-md:  0 2px 8px rgba(29,61,89,0.08);
    --shadow-lg:  0 4px 16px rgba(29,61,89,0.12);
    --shadow-xl:  0 8px 32px rgba(29,61,89,0.16);

    /* Transitions */
    --transition-fast:   150ms ease;
    --transition-normal: 250ms ease;

    /* Layout Dimensions */
    --sidebar-width:     260px;
    --sidebar-collapsed: 72px;
    --topbar-height:     64px;
}


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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    font-family: var(--font-ui);
    font-size: 0.9375rem; /* 15px */
    font-weight: 400;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg-page);
}

a {
    color: var(--color-cta);
    text-decoration: none;
    transition: color var(--transition-fast);
}
a:hover {
    color: var(--color-primary);
    text-decoration: underline;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}


/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
    line-height: 1.3;
    margin-bottom: var(--space-sm);
}

h1 {
    font-family: var(--font-ui);
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--color-heading);
}

h2 {
    font-family: var(--font-ui);
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--color-h2-accent);
}

h3 {
    font-family: var(--font-ui);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-heading);
}

h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-heading);
}

p {
    margin-bottom: var(--space-md);
}

small {
    font-size: 0.8125rem;
    color: var(--color-near-black-60);
}

code, pre {
    font-family: var(--font-mono);
    font-size: 0.875rem;
}

code {
    background: var(--color-sand-40);
    padding: 0.125rem 0.375rem;
    border-radius: var(--radius-sm);
}

pre {
    background: var(--color-near-black);
    color: #E0E5EC;
    padding: var(--space-md);
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin-bottom: var(--space-md);
}

pre code {
    background: none;
    padding: 0;
    border-radius: 0;
    color: inherit;
}


/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    font-family: var(--font-ui);
    font-size: 0.875rem;
    font-weight: 600;
    line-height: 1;
    padding: 0.625rem 1.25rem;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
}
.btn:hover { text-decoration: none; }
.btn:focus-visible {
    outline: 2px solid var(--color-cta);
    outline-offset: 2px;
}
.btn:disabled, .btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Primary CTA button */
.btn-primary {
    background-color: var(--color-cta);
    color: #FFFFFF;
}
.btn-primary:hover {
    background-color: #0E164F;
    color: #FFFFFF;
}

/* Secondary button */
.btn-secondary {
    background-color: var(--color-secondary-20);
    color: var(--color-primary);
    border: 1px solid var(--color-secondary-40);
}
.btn-secondary:hover {
    background-color: var(--color-secondary-40);
    color: var(--color-primary);
}

/* Danger button */
.btn-danger {
    background-color: var(--color-danger);
    color: #FFFFFF;
}
.btn-danger:hover {
    background-color: #9B1C1C;
    color: #FFFFFF;
}

/* Ghost/text button */
.btn-ghost {
    background: transparent;
    color: var(--color-cta);
    padding: 0.5rem 0.75rem;
}
.btn-ghost:hover {
    background: var(--color-sand-40);
    color: var(--color-primary);
}

/* Button sizes */
.btn-sm { font-size: 0.8125rem; padding: 0.375rem 0.75rem; }
.btn-lg { font-size: 1rem; padding: 0.75rem 1.5rem; }


/* --- Cards --- */
.card {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-light);
    overflow: hidden;
}

.card-header {
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--color-border-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-header h3 {
    margin-bottom: 0;
    font-size: 1rem;
}

.card-body {
    padding: var(--space-lg);
}

.card-footer {
    padding: var(--space-md) var(--space-lg);
    border-top: 1px solid var(--color-border-light);
    background: var(--color-sand-20);
}


/* --- Stat Cards --- */
.stat-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-light);
    padding: var(--space-lg);
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
}

.stat-card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.stat-card-icon.primary { background: var(--color-primary-20); color: var(--color-primary); }
.stat-card-icon.secondary { background: var(--color-secondary-20); color: var(--color-secondary); }
.stat-card-icon.gold { background: var(--color-accent-gold-20); color: var(--color-accent-gold); }
.stat-card-icon.success { background: var(--color-success-bg); color: var(--color-success); }

.stat-card-value {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--color-heading);
    line-height: 1.2;
}

.stat-card-label {
    font-size: 0.8125rem;
    color: var(--color-near-black-60);
    margin-top: 2px;
}


/* --- Tables --- */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-md);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

thead th {
    background: var(--color-sand-20);
    color: var(--color-primary);
    font-weight: 600;
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 2px solid var(--color-border);
    white-space: nowrap;
}

tbody td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--color-border-light);
    vertical-align: middle;
}

tbody tr:hover {
    background: var(--color-sand-20);
}

/* Striped variant */
table.striped tbody tr:nth-child(even) {
    background: var(--color-grey-mid-20);
}


/* --- Forms --- */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-heading);
    margin-bottom: var(--space-xs);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    font-family: var(--font-ui);
    font-size: 0.9375rem;
    padding: 0.625rem 0.875rem;
    border: 1px solid var(--color-grey-mid-80);
    border-radius: var(--radius-md);
    background: var(--color-bg-card);
    color: var(--color-text);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-cta);
    box-shadow: 0 0 0 3px rgba(20,31,114,0.12);
}

.form-input::placeholder {
    color: var(--color-near-black-40);
}

.form-input.error {
    border-color: var(--color-danger);
}

.form-hint {
    font-size: 0.8125rem;
    color: var(--color-near-black-60);
    margin-top: var(--space-xs);
}

.form-error {
    font-size: 0.8125rem;
    color: var(--color-danger);
    margin-top: var(--space-xs);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}


/* --- Alerts --- */
.alert {
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--space-md);
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    border-left: 4px solid transparent;
}

.alert-info {
    background: var(--color-info-bg);
    color: var(--color-secondary);
    border-left-color: var(--color-secondary);
}

.alert-success {
    background: var(--color-success-bg);
    color: var(--color-success);
    border-left-color: var(--color-success);
}

.alert-warning {
    background: var(--color-warning-bg);
    color: #7A5E0B;
    border-left-color: var(--color-warning);
}

.alert-danger {
    background: var(--color-danger-bg);
    color: var(--color-danger);
    border-left-color: var(--color-danger);
}


/* --- Badges --- */
.badge {
    display: inline-flex;
    align-items: center;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.2rem 0.625rem;
    border-radius: var(--radius-full);
    line-height: 1.4;
}

.badge-active   { background: var(--color-success-bg); color: var(--color-success); }
.badge-pending  { background: var(--color-warning-bg); color: #7A5E0B; }
.badge-suspended { background: var(--color-danger-bg); color: var(--color-danger); }
.badge-info     { background: var(--color-info-bg); color: var(--color-secondary); }
.badge-admin    { background: var(--color-primary-20); color: var(--color-primary); }


/* --- Modals --- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(29,29,27,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

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

.modal {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    width: 90%;
    max-width: 520px;
    max-height: 90vh;
    overflow-y: auto;
    transform: translateY(20px);
    transition: transform var(--transition-normal);
}

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

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

.modal-header h3 { margin-bottom: 0; }

.modal-close {
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    color: var(--color-near-black-60);
    padding: var(--space-xs);
    border-radius: var(--radius-sm);
    line-height: 1;
}
.modal-close:hover { color: var(--color-danger); background: var(--color-danger-bg); }

.modal-body { padding: var(--space-lg); }

.modal-footer {
    padding: var(--space-md) var(--space-lg);
    border-top: 1px solid var(--color-border-light);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-sm);
}


/* --- Loading / Skeleton --- */
.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--color-grey-mid-40);
    border-top-color: var(--color-cta);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.skeleton {
    background: linear-gradient(90deg, var(--color-grey-mid-20) 25%, var(--color-grey-mid-40) 50%, var(--color-grey-mid-20) 75%);
    background-size: 200% 100%;
    animation: skeleton-shimmer 1.5s ease infinite;
    border-radius: var(--radius-sm);
}

@keyframes skeleton-shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.skeleton-text   { height: 14px; margin-bottom: 8px; }
.skeleton-title  { height: 24px; width: 60%; margin-bottom: 12px; }
.skeleton-avatar { width: 40px; height: 40px; border-radius: 50%; }


/* --- Utility Classes --- */
.text-center { text-align: center; }
.text-right  { text-align: right; }
.text-muted  { color: var(--color-near-black-60); }
.text-primary { color: var(--color-primary); }
.text-danger  { color: var(--color-danger); }
.text-success { color: var(--color-success); }
.text-small   { font-size: 0.8125rem; }
.font-mono    { font-family: var(--font-mono); }

.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

.d-flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }

.hidden { display: none !important; }
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    border: 0;
}