/* ============================================
   SDH Portal - Main Stylesheet
   Version: 2.0.0
   ============================================ */

/* ============================================
   Design Tokens (CSS Custom Properties)
   ============================================ */
:root {
    /* Colors - Primary Palette */
    --color-primary: #049999;
    --color-primary-light: #06b3b3;
    --color-primary-dark: #037a7a;
    --color-primary-rgb: 4, 153, 153;

    /* Colors - Accent */
    --color-accent: #06cccc;
    --color-accent-light: #33d6d6;
    --color-accent-dark: #04a3a3;

    /* Colors - Neutral */
    --color-bg: #f8f9fa;
    --color-bg-alt: #f0f2f5;
    --color-surface: #ffffff;
    --color-border: #e5e7eb;
    --color-border-light: #f3f4f6;

    /* Colors - Text */
    --color-text: #1f2937;
    --color-text-secondary: #4b5563;
    --color-text-muted: #6b7280;
    --color-text-light: #9ca3af;

    /* Colors - Status */
    --color-success: #10b981;
    --color-success-light: #d1fae5;
    --color-warning: #f59e0b;
    --color-warning-light: #fef3c7;
    --color-danger: #ef4444;
    --color-danger-light: #fee2e2;
    --color-info: #3b82f6;
    --color-info-light: #dbeafe;

    /* Layout Dimensions */
    --sidebar-width: 70px;
    --sidebar-width-expanded: 240px;
    --navbar-height: 64px;
    --content-max-width: 1400px;

    /* Typography - System Fonts */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-family-mono: 'SF Mono', 'Monaco', 'Consolas', monospace;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 0.9375rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --line-height-tight: 1.25;
    --line-height-base: 1.6;
    --line-height-relaxed: 1.75;

    /* Font Weights */
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* Spacing Scale */
    --spacing-0: 0;
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;

    /* Z-Index Scale */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-overlay: 400;
    --z-modal: 500;
    --z-popover: 600;
    --z-tooltip: 700;
}

/* ============================================
   CSS Reset & Base Styles
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
}

* {
    margin: 0;
    padding: 0;
}

html {
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-base);
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img, picture, video, canvas, svg {
    display: block;
    max-width: 100%;
}

input, button, textarea, select {
    font: inherit;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary);
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    color: var(--color-text);
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }
h5 { font-size: var(--font-size-base); }
h6 { font-size: var(--font-size-sm); }

.text-muted { color: var(--color-text-muted); }
.text-secondary { color: var(--color-text-secondary); }

/* ============================================
   Layout - App Wrapper
   ============================================ */
.layout-app {
    min-height: 100vh;
}

.app-wrapper {
    display: flex;
    min-height: 100vh;
}

.app-main {
    flex: 1;
    margin-left: var(--sidebar-width);
    transition: margin-left var(--transition-base);
    min-width: 0; /* Prevent flex item overflow */
}

.app-content {
    padding-top: var(--navbar-height);
    min-height: 100vh;
}

.app-content-inner {
    padding: var(--spacing-6);
    max-width: var(--content-max-width);
    margin: 0 auto;
}

/* ============================================
   Sidebar
   ============================================ */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--color-primary);
    display: flex;
    flex-direction: column;
    transition: width var(--transition-base);
    z-index: var(--z-fixed);
    overflow: hidden;
}

.sidebar.expanded {
    width: var(--sidebar-width-expanded);
}

.sidebar-header {
    padding: var(--spacing-4);
    height: var(--navbar-height);
    display: flex;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    text-decoration: none;
    color: #fff;
    white-space: nowrap;
}

.sidebar-logo {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
    object-fit: contain;
}

.sidebar-brand-text {
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-lg);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.sidebar.expanded .sidebar-brand-text {
    opacity: 1;
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: var(--spacing-4) 0;
}

.sidebar-menu {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-item {
    margin-bottom: var(--spacing-1);
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-4);
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
    white-space: nowrap;
}

.sidebar-link i {
    font-size: 1.25rem;
    width: 24px;
    text-align: center;
    flex-shrink: 0;
}

.sidebar-link span {
    opacity: 0;
    transition: opacity var(--transition-base);
}

.sidebar.expanded .sidebar-link span {
    opacity: 1;
}

.sidebar-link:hover,
.sidebar-item.active .sidebar-link {
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
    border-left-color: var(--color-accent);
}

.sidebar-item.active .sidebar-link i {
    color: #fff;
    filter: drop-shadow(0 0 6px rgba(4, 153, 153, 0.8))
            drop-shadow(0 0 12px rgba(4, 153, 153, 0.4));
}

.sidebar-divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
    margin: 0 var(--spacing-4);
}


/* Sidebar Toggle */
.sidebar-toggle {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-lg);
    background: transparent;
    color: rgba(255, 255, 255, 0.7);
    border: none;
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    flex-shrink: 0;
    transition: color var(--transition-fast), background var(--transition-fast);
}

.sidebar-toggle:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
}

/* Mobile Sidebar Toggle (in navbar) */
.sidebar-toggle-mobile {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-lg);
    background: transparent;
    color: var(--color-text);
    border: none;
    font-size: 1.25rem;
    display: none;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    flex-shrink: 0;
    margin-right: var(--spacing-2);
    transition: color var(--transition-fast), background var(--transition-fast);
}

.sidebar-toggle-mobile:hover {
    background: var(--color-bg);
}

.sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: calc(var(--z-fixed) - 1);
}

.sidebar-overlay.show {
    opacity: 1;
    visibility: visible;
}

/* ============================================
   Navbar
   ============================================ */
.app-navbar {
    position: fixed;
    top: 0;
    right: 0;
    left: var(--sidebar-width);
    height: var(--navbar-height);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-6);
    transition: left var(--transition-base);
    z-index: var(--z-sticky);
}

.navbar-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    margin: 0;
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.navbar-user {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: var(--radius-lg);
    transition: background var(--transition-fast);
    cursor: pointer;
    border: none;
    background: transparent;
}

.navbar-user:hover {
    background: var(--color-bg);
}

.navbar-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
}

.navbar-user-info {
    display: flex;
    flex-direction: column;
}

.navbar-user-name {
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    color: var(--color-text);
}

.navbar-user-role {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

/* ============================================
   Cards
   ============================================ */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-fast);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    padding: var(--spacing-5) var(--spacing-6);
    border-bottom: 1px solid var(--color-border);
    background: transparent;
}

.card-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin: 0;
}

.card-body {
    padding: var(--spacing-6);
}

.card-footer {
    padding: var(--spacing-4) var(--spacing-6);
    border-top: 1px solid var(--color-border);
    background: var(--color-bg);
    border-radius: 0 0 var(--radius-xl) var(--radius-xl);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-lg);
    padding: 0.625rem 1.25rem;
    transition: all var(--transition-fast);
    cursor: pointer;
    border: 1px solid transparent;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

.btn-primary:hover:not(:disabled) {
    background: var(--color-primary-light);
    border-color: var(--color-primary-light);
    color: #fff;
}

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

.btn-secondary:hover:not(:disabled) {
    background: var(--color-border-light);
    border-color: var(--color-border);
}

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

.btn-outline-primary:hover:not(:disabled) {
    background: var(--color-primary);
    color: #fff;
}

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

.btn-ghost:hover:not(:disabled) {
    background: var(--color-bg);
    color: var(--color-text);
}

.btn-danger {
    background: var(--color-danger);
    border-color: var(--color-danger);
    color: #fff;
}

.btn-danger:hover:not(:disabled) {
    background: #dc2626;
    border-color: #dc2626;
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: 0.875rem 1.5rem;
    font-size: var(--font-size-lg);
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: var(--radius-lg);
}

.btn-icon.btn-sm {
    width: 32px;
    height: 32px;
}

/* Button Loading State */
.btn .btn-spinner {
    display: none;
}

.btn.is-loading .btn-text {
    visibility: hidden;
}

.btn.is-loading .btn-spinner {
    display: block;
    position: absolute;
}

/* ============================================
   Forms
   ============================================ */
.form-group {
    margin-bottom: var(--spacing-5);
}

.form-label {
    display: block;
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-2);
    color: var(--color-text);
}

.form-label-required::after {
    content: '*';
    color: var(--color-danger);
    margin-left: var(--spacing-1);
}

.form-control,
.form-select {
    display: block;
    width: 100%;
    padding: 0.625rem 0.875rem;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-base);
    color: var(--color-text);
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.1);
}

.form-control::placeholder {
    color: var(--color-text-light);
}

.form-control:disabled,
.form-select:disabled {
    background-color: var(--color-bg);
    cursor: not-allowed;
}

.form-control.is-invalid,
.form-select.is-invalid {
    border-color: var(--color-danger);
}

.form-control.is-invalid:focus,
.form-select.is-invalid:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.invalid-feedback {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-danger);
    margin-top: var(--spacing-1);
}

.form-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-top: var(--spacing-1);
}

/* Form Floating Labels */
.form-floating {
    position: relative;
}

.form-floating > .form-control,
.form-floating > .form-select {
    height: calc(3.5rem + 2px);
    padding: 1rem 0.875rem;
}

.form-floating > label {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    padding: 1rem 0.875rem;
    pointer-events: none;
    border: 1px solid transparent;
    transform-origin: 0 0;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
    color: var(--color-text-muted);
}

.form-floating > .form-control:focus ~ label,
.form-floating > .form-control:not(:placeholder-shown) ~ label,
.form-floating > .form-select ~ label {
    opacity: 0.65;
    transform: scale(0.85) translateY(-0.5rem) translateX(0.15rem);
}

/* Checkbox & Radio */
.form-check {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-2);
}

.form-check-input {
    width: 1.125rem;
    height: 1.125rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.form-check-input[type="radio"] {
    border-radius: var(--radius-full);
}

.form-check-label {
    cursor: pointer;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* ============================================
   Alerts
   ============================================ */
.alert {
    padding: var(--spacing-4) var(--spacing-5);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-4);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
}

.alert-icon {
    flex-shrink: 0;
    font-size: 1.25rem;
}

.alert-content {
    flex: 1;
}

.alert-title {
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-1);
}

.alert-success {
    background: var(--color-success-light);
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.alert-success .alert-icon { color: var(--color-success); }

.alert-danger {
    background: var(--color-danger-light);
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-danger .alert-icon { color: var(--color-danger); }

.alert-warning {
    background: var(--color-warning-light);
    color: #92400e;
    border: 1px solid #fde68a;
}

.alert-warning .alert-icon { color: var(--color-warning); }

.alert-info {
    background: var(--color-info-light);
    color: #1e40af;
    border: 1px solid #bfdbfe;
}

.alert-info .alert-icon { color: var(--color-info); }

.alert-dismissible {
    padding-right: var(--spacing-10);
}

.alert-dismissible .btn-close {
    position: absolute;
    top: var(--spacing-3);
    right: var(--spacing-3);
}

/* ============================================
   Tables
   ============================================ */
.table-container {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.table th,
.table td {
    padding: var(--spacing-3) var(--spacing-4);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.table th {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-secondary);
    background: var(--color-bg);
    white-space: nowrap;
}

.table tbody tr:hover {
    background: var(--color-bg);
}

.table tbody tr:last-child td {
    border-bottom: none;
}

/* ============================================
   Badges
   ============================================ */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.625rem;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-full);
    line-height: 1;
}

.badge-primary { background: var(--color-primary); color: #fff; }
.badge-success { background: var(--color-success-light); color: #065f46; }
.badge-warning { background: var(--color-warning-light); color: #92400e; }
.badge-danger { background: var(--color-danger-light); color: #991b1b; }
.badge-info { background: var(--color-info-light); color: #1e40af; }
.badge-secondary { background: var(--color-bg); color: var(--color-text-secondary); }

/* Status Badges (for workflow states) */
.stato-1 { background: var(--color-info-light); color: #1e40af; }
.stato-2 { background: var(--color-warning-light); color: #92400e; }
.stato-3 { background: #fef3c7; color: #b45309; }
.stato-4 { background: var(--color-success-light); color: #065f46; }
.stato-5 { background: var(--color-danger-light); color: #991b1b; }
.stato-6 { background: var(--color-bg); color: var(--color-text-muted); }

/* ============================================
   Cookie Banner
   ============================================ */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-4) var(--spacing-6);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-fixed);
    transform: translateY(100%);
    transition: transform var(--transition-base);
}

.cookie-banner.show {
    transform: translateY(0);
}

.cookie-banner-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-4);
    max-width: var(--content-max-width);
    margin: 0 auto;
}

.cookie-banner-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.cookie-banner-text a {
    color: var(--color-accent);
    text-decoration: underline;
}

.cookie-banner-actions {
    display: flex;
    gap: var(--spacing-2);
    flex-shrink: 0;
}

/* ============================================
   Utilities
   ============================================ */
.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

.truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ============================================
   Responsive - Tablet & Mobile
   ============================================ */
@media (max-width: 991.98px) {
    .sidebar {
        transform: translateX(-100%);
        width: var(--sidebar-width-expanded);
    }

    .sidebar.show {
        transform: translateX(0);
    }

    .sidebar .sidebar-brand-text,
    .sidebar .sidebar-link span {
        opacity: 1;
    }

    .app-main {
        margin-left: 0;
    }

    .app-navbar {
        left: 0;
    }

    .sidebar-toggle-mobile {
        display: flex;
    }

    .navbar-user-info {
        display: none;
    }
}

@media (max-width: 767.98px) {
    .app-content-inner {
        padding: var(--spacing-4);
    }

    .app-navbar {
        padding: 0 var(--spacing-4);
    }

    .cookie-banner-content {
        flex-direction: column;
        text-align: center;
    }

    .cookie-banner-actions {
        width: 100%;
        flex-direction: column;
    }

    .cookie-banner-actions .btn {
        width: 100%;
    }
}

@media (min-width: 992px) {
    .sidebar-overlay {
        display: none !important;
    }

    .sidebar.expanded ~ .app-main {
        margin-left: var(--sidebar-width-expanded);
    }

    .sidebar.expanded ~ .app-main .app-navbar {
        left: var(--sidebar-width-expanded);
    }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .sidebar,
    .sidebar-toggle,
    .app-navbar,
    .cookie-banner {
        display: none !important;
    }

    .app-main {
        margin-left: 0 !important;
    }

    .app-content {
        padding-top: 0 !important;
    }
}