/* ============================================================
   PDC Inteligente — Design System
   Dark theme · academIA.bo color palette
   ============================================================ */

/* ------------------------------------------------------------
   1. CSS CUSTOM PROPERTIES (DESIGN TOKENS)
   ------------------------------------------------------------ */
:root {
    /* Core palette */
    --color-bg:            #0F172A;
    --color-panel:         #1E293B;
    --color-panel-hover:   #263449;
    --color-line:          #334155;
    --color-text:          #F1F5F9;
    --color-muted:         #94A3B8;

    /* Brand */
    --color-primary:       #0284C7;
    --color-primary-light: #0EA5E9;
    --color-primary-dark:  #0369A1;

    /* Semantic */
    --color-gold:          #FACC15;
    --color-success:       #10B981;
    --color-error:         #EF4444;
    --color-warning:       #F59E0B;
    --color-info:          #3B82F6;

    /* Surface tokens */
    --color-success-bg:    rgba(16, 185, 129, 0.12);
    --color-error-bg:      rgba(239, 68, 68, 0.12);
    --color-warning-bg:    rgba(245, 158, 11, 0.12);
    --color-info-bg:       rgba(59, 130, 246, 0.12);
    --color-gold-bg:       rgba(250, 204, 21, 0.12);

    /* Shape & elevation */
    --radius:              10px;
    --radius-sm:           6px;
    --radius-lg:           16px;
    --radius-pill:         999px;
    --shadow:              0 4px 10px rgba(0, 0, 0, 0.20);
    --shadow-lg:           0 8px 24px rgba(0, 0, 0, 0.35);

    /* Layout */
    --bottom-nav-height:   64px;
    --page-padding:        1rem;

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

    /* Transitions */
    --transition:          0.18s ease;
}

/* ------------------------------------------------------------
   2. RESET & BASE
   ------------------------------------------------------------ */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-text);
    margin: 0;
    padding: 0;
    min-height: 100vh;
    /* push content above fixed bottom nav */
    padding-bottom: calc(var(--bottom-nav-height) + env(safe-area-inset-bottom, 0px));
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--color-primary-light);
    text-decoration: none;
    transition: color var(--transition);
}

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

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

/* ------------------------------------------------------------
   3. BOOTSTRAP 5 DARK OVERRIDES
   ------------------------------------------------------------ */

/* Body / page background */
.bg-body, .bg-light { background-color: var(--color-bg) !important; }
.bg-secondary-subtle { background-color: var(--color-panel) !important; }

/* Navbar */
.navbar {
    background-color: var(--color-panel) !important;
    border-bottom: 1px solid var(--color-line);
    box-shadow: var(--shadow);
}

/* Cards */
.card {
    background-color: var(--color-panel);
    border: 1px solid var(--color-line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    color: var(--color-text);
}

.card-header {
    background-color: rgba(255, 255, 255, 0.04);
    border-bottom: 1px solid var(--color-line);
    font-weight: 600;
    letter-spacing: 0.01em;
}

.card-footer {
    background-color: rgba(255, 255, 255, 0.03);
    border-top: 1px solid var(--color-line);
}

/* Modals */
.modal-content {
    background-color: var(--color-panel);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-lg);
    color: var(--color-text);
}

.modal-header {
    border-bottom: 1px solid var(--color-line);
}

.modal-footer {
    border-top: 1px solid var(--color-line);
}

.modal-backdrop.show {
    opacity: 0.7;
}

/* Dropdowns */
.dropdown-menu {
    background-color: var(--color-panel);
    border: 1px solid var(--color-line);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    color: var(--color-text);
}

.dropdown-item {
    color: var(--color-text);
    transition: background-color var(--transition);
}

.dropdown-item:hover, .dropdown-item:focus {
    background-color: var(--color-line);
    color: var(--color-text);
}

.dropdown-divider {
    border-top-color: var(--color-line);
}

/* Tables */
.table {
    color: var(--color-text);
    border-color: var(--color-line);
}

.table > :not(caption) > * > * {
    background-color: transparent;
    border-bottom-color: var(--color-line);
    color: var(--color-text);
}

.table-striped > tbody > tr:nth-of-type(odd) > * {
    background-color: rgba(255, 255, 255, 0.03);
    color: var(--color-text);
}

.table-hover > tbody > tr:hover > * {
    background-color: rgba(255, 255, 255, 0.06);
    color: var(--color-text);
}

.table thead th {
    background-color: rgba(255, 255, 255, 0.05);
    border-bottom: 2px solid var(--color-line);
    color: var(--color-muted);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* List groups */
.list-group-item {
    background-color: var(--color-panel);
    border-color: var(--color-line);
    color: var(--color-text);
}

.list-group-item-action:hover,
.list-group-item-action:focus {
    background-color: var(--color-panel-hover);
    color: var(--color-text);
}

.list-group-item.active {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

/* Pagination */
.page-link {
    background-color: var(--color-panel);
    border-color: var(--color-line);
    color: var(--color-primary-light);
}

.page-link:hover {
    background-color: var(--color-line);
    border-color: var(--color-line);
    color: var(--color-text);
}

.page-item.active .page-link {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

.page-item.disabled .page-link {
    background-color: var(--color-panel);
    border-color: var(--color-line);
    color: var(--color-muted);
}

/* Accordion */
.accordion-item {
    background-color: var(--color-panel);
    border-color: var(--color-line);
}

.accordion-button {
    background-color: var(--color-panel);
    color: var(--color-text);
}

.accordion-button:not(.collapsed) {
    background-color: rgba(2, 132, 199, 0.12);
    color: var(--color-primary-light);
    box-shadow: none;
}

.accordion-button::after {
    filter: invert(1);
}

/* Spinners inherit color */
.spinner-border, .spinner-grow {
    color: var(--color-primary-light);
}

/* ------------------------------------------------------------
   4. FORMS
   ------------------------------------------------------------ */
.form-control,
.form-select,
.form-control:focus,
.form-select:focus {
    background-color: var(--color-bg);
    border: 1.5px solid var(--color-line);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    font-size: 0.95rem;
    padding: 0.6rem 0.85rem;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.20);
    outline: none;
}

.form-control::placeholder {
    color: var(--color-muted);
    opacity: 1;
}

.form-control:disabled,
.form-select:disabled,
.form-control[readonly] {
    background-color: var(--color-panel);
    border-color: var(--color-line);
    color: var(--color-muted);
    cursor: not-allowed;
    opacity: 0.7;
}

.form-label {
    color: var(--color-muted);
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    margin-bottom: 0.35rem;
    text-transform: uppercase;
}

.form-text {
    color: var(--color-muted);
    font-size: 0.8rem;
}

.form-check-input {
    background-color: var(--color-bg);
    border-color: var(--color-line);
}

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

.form-check-input:focus {
    box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.20);
}

.input-group-text {
    background-color: var(--color-panel);
    border-color: var(--color-line);
    color: var(--color-muted);
}

/* Validation states */
.is-invalid ~ .invalid-feedback,
.was-validated .form-control:invalid ~ .invalid-feedback {
    color: var(--color-error);
}

.form-control.is-invalid,
.was-validated .form-control:invalid {
    border-color: var(--color-error);
}

.form-control.is-valid,
.was-validated .form-control:valid {
    border-color: var(--color-success);
}

/* ------------------------------------------------------------
   5. BUTTONS
   ------------------------------------------------------------ */
.btn {
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.875rem;
    letter-spacing: 0.02em;
    padding: 0.55rem 1.25rem;
    transition: all var(--transition);
    border: none;
}

/* Primary */
.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: #fff;
    box-shadow: 0 2px 8px rgba(2, 132, 199, 0.35);
}

.btn-primary:hover, .btn-primary:focus {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
    box-shadow: 0 4px 14px rgba(2, 132, 199, 0.45);
    color: #fff;
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 6px rgba(2, 132, 199, 0.30);
}

/* Secondary (panel button) */
.btn-secondary {
    background-color: var(--color-line);
    color: var(--color-text);
    border: 1px solid var(--color-line);
}

.btn-secondary:hover, .btn-secondary:focus {
    background-color: #3d5068;
    color: var(--color-text);
}

/* Ghost / outline */
.btn-outline-primary {
    border: 1.5px solid var(--color-primary);
    color: var(--color-primary-light);
    background: transparent;
}

.btn-outline-primary:hover {
    background-color: rgba(2, 132, 199, 0.12);
    color: var(--color-primary-light);
    border-color: var(--color-primary-light);
}

.btn-outline-secondary {
    border: 1.5px solid var(--color-line);
    color: var(--color-muted);
    background: transparent;
}

.btn-outline-secondary:hover {
    background-color: var(--color-line);
    color: var(--color-text);
}

/* Danger */
.btn-danger {
    background-color: var(--color-error);
    color: #fff;
}

.btn-danger:hover {
    background-color: #dc2626;
    color: #fff;
    transform: translateY(-1px);
}

/* Success */
.btn-success {
    background-color: var(--color-success);
    color: #fff;
}

.btn-success:hover {
    background-color: #059669;
    color: #fff;
    transform: translateY(-1px);
}

/* Warning */
.btn-warning {
    background-color: var(--color-warning);
    color: #0F172A;
}

.btn-warning:hover {
    background-color: #d97706;
    color: #0F172A;
}

/* Gold / premium */
.btn-gold {
    background: linear-gradient(135deg, #FACC15, #F59E0B);
    color: #0F172A;
    font-weight: 700;
    box-shadow: 0 2px 8px rgba(250, 204, 21, 0.30);
}

.btn-gold:hover {
    background: linear-gradient(135deg, #F59E0B, #D97706);
    color: #0F172A;
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(250, 204, 21, 0.40);
}

/* Link-style */
.btn-link {
    color: var(--color-primary-light);
    text-decoration: none;
    background: none;
    border: none;
    padding: 0;
}

.btn-link:hover {
    color: var(--color-text);
    text-decoration: underline;
}

/* Size variants */
.btn-sm {
    font-size: 0.78rem;
    padding: 0.35rem 0.85rem;
}

.btn-lg {
    font-size: 1rem;
    padding: 0.75rem 1.75rem;
    border-radius: var(--radius);
}

/* Icon button */
.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
}

/* Pill buttons */
.btn-pill {
    border-radius: var(--radius-pill);
}

/* ------------------------------------------------------------
   6. BADGES
   ------------------------------------------------------------ */
.badge {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    padding: 0.3em 0.65em;
    border-radius: var(--radius-pill);
}

.badge-primary   { background-color: var(--color-primary);  color: #fff; }
.badge-success   { background-color: var(--color-success);  color: #fff; }
.badge-error     { background-color: var(--color-error);    color: #fff; }
.badge-warning   { background-color: var(--color-warning);  color: #0F172A; }
.badge-gold      { background-color: var(--color-gold);     color: #0F172A; }
.badge-info      { background-color: var(--color-info);     color: #fff; }
.badge-muted     { background-color: var(--color-line);     color: var(--color-muted); }

/* Status pill badges used in PDC cards */
.badge-borrador  { background-color: var(--color-line);     color: var(--color-muted); }
.badge-generando {
    background-color: rgba(59, 130, 246, 0.20);
    color: var(--color-info);
    animation: pulse-badge 1.8s infinite;
}
.badge-completado {
    background-color: var(--color-success-bg);
    color: var(--color-success);
}
.badge-error-estado {
    background-color: var(--color-error-bg);
    color: var(--color-error);
}

@keyframes pulse-badge {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0.55; }
}

/* Bootstrap badge overrides */
.bg-primary   { background-color: var(--color-primary)   !important; }
.bg-success   { background-color: var(--color-success)   !important; }
.bg-danger    { background-color: var(--color-error)     !important; }
.bg-warning   { background-color: var(--color-warning)   !important; color: #0F172A !important; }
.bg-info      { background-color: var(--color-info)      !important; }
.bg-secondary { background-color: var(--color-line)      !important; }

/* ------------------------------------------------------------
   7. ALERTS / FLASH MESSAGES
   ------------------------------------------------------------ */
.alert {
    border: none;
    border-radius: var(--radius);
    font-size: 0.9rem;
    padding: 0.85rem 1rem;
    border-left: 4px solid transparent;
}

.alert-success {
    background-color: var(--color-success-bg);
    border-left-color: var(--color-success);
    color: #6ee7b7;
}

.alert-danger {
    background-color: var(--color-error-bg);
    border-left-color: var(--color-error);
    color: #fca5a5;
}

.alert-warning {
    background-color: var(--color-warning-bg);
    border-left-color: var(--color-warning);
    color: #fcd34d;
}

.alert-info {
    background-color: var(--color-info-bg);
    border-left-color: var(--color-info);
    color: #93c5fd;
}

.alert .btn-close {
    filter: invert(1) opacity(0.6);
}

/* ------------------------------------------------------------
   8. PDC CARDS
   ------------------------------------------------------------ */
.pdc-card {
    background-color: var(--color-panel);
    border: 1px solid var(--color-line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: transform var(--transition), box-shadow var(--transition);
    cursor: pointer;
}

.pdc-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.pdc-card__header {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.pdc-card__title {
    font-size: 0.95rem;
    font-weight: 700;
    color: #fff;
    margin: 0;
}

.pdc-card__body {
    padding: 1rem;
}

.pdc-card__meta {
    font-size: 0.8rem;
    color: var(--color-muted);
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-top: 0.5rem;
}

.pdc-card__meta-item {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.pdc-card__progress {
    height: 4px;
    background-color: var(--color-line);
    border-radius: var(--radius-pill);
    overflow: hidden;
    margin-top: 0.75rem;
}

.pdc-card__progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    border-radius: var(--radius-pill);
    transition: width 0.4s ease;
}

/* Area row inside PDC detail */
.area-row {
    background-color: var(--color-bg);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-sm);
    padding: 0.75rem 1rem;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.area-row__icon {
    width: 36px;
    height: 36px;
    background: rgba(2, 132, 199, 0.15);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary-light);
    flex-shrink: 0;
}

.area-row__name {
    font-size: 0.875rem;
    font-weight: 600;
    flex: 1;
}

/* ------------------------------------------------------------
   9. CREDIT / BALANCE WIDGET
   ------------------------------------------------------------ */
.credit-widget {
    background: linear-gradient(135deg, #1E293B, #263449);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.credit-widget::before {
    content: '';
    position: absolute;
    top: -40px;
    right: -40px;
    width: 120px;
    height: 120px;
    background: radial-gradient(circle, rgba(250, 204, 21, 0.12), transparent 70%);
    border-radius: 50%;
}

.credit-widget__balance {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-gold);
    line-height: 1;
}

.credit-widget__label {
    font-size: 0.78rem;
    color: var(--color-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-top: 0.25rem;
}

/* ------------------------------------------------------------
   10. BOTTOM NAVIGATION BAR
   ------------------------------------------------------------ */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--bottom-nav-height);
    background-color: var(--color-panel);
    border-top: 1px solid var(--color-line);
    display: flex;
    align-items: center;
    justify-content: space-around;
    padding-bottom: env(safe-area-inset-bottom, 0px);
    z-index: 1000;
    box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.30);
}

/* Individual tab */
.bottom-nav__tab {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    flex: 1;
    height: 100%;
    color: var(--color-muted);
    text-decoration: none;
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    transition: color var(--transition);
    position: relative;
    -webkit-tap-highlight-color: transparent;
}

.bottom-nav__tab:hover,
.bottom-nav__tab.active {
    color: var(--color-primary-light);
    text-decoration: none;
}

.bottom-nav__tab.active {
    color: var(--color-primary);
}

/* Active indicator line at top of tab */
.bottom-nav__tab.active::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 2px;
    background-color: var(--color-primary);
    border-radius: 0 0 var(--radius-pill) var(--radius-pill);
}

.bottom-nav__tab i,
.bottom-nav__tab svg {
    font-size: 1.35rem;
    line-height: 1;
}

.bottom-nav__label {
    font-size: 0.68rem;
    line-height: 1;
}

/* FAB — center "Nuevo PDC" button */
.bottom-nav__fab {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    color: var(--color-muted);
    text-decoration: none;
    font-size: 0.7rem;
    font-weight: 500;
    gap: 3px;
    -webkit-tap-highlight-color: transparent;
    margin-top: -20px; /* floats above nav bar */
}

.bottom-nav__fab:hover {
    color: var(--color-text);
    text-decoration: none;
}

.bottom-nav__fab-btn {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.5rem;
    box-shadow: 0 4px 14px rgba(2, 132, 199, 0.50);
    transition: transform var(--transition), box-shadow var(--transition);
    border: 3px solid var(--color-bg);
}

.bottom-nav__fab:hover .bottom-nav__fab-btn,
.bottom-nav__fab:focus .bottom-nav__fab-btn {
    transform: scale(1.08) translateY(-2px);
    box-shadow: 0 6px 20px rgba(2, 132, 199, 0.65);
}

.bottom-nav__fab-label {
    font-size: 0.68rem;
    color: var(--color-muted);
    line-height: 1;
}

/* ------------------------------------------------------------
   11. PAGE CONTENT
   ------------------------------------------------------------ */
.page-content {
    padding: var(--page-padding);
    max-width: 640px;
    margin: 0 auto;
}

.page-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem var(--page-padding) 0.5rem;
    max-width: 640px;
    margin: 0 auto;
}

.page-header__title {
    font-size: 1.15rem;
    font-weight: 700;
    margin: 0;
    color: var(--color-text);
}

.page-header__subtitle {
    font-size: 0.8rem;
    color: var(--color-muted);
    margin: 0.1rem 0 0;
}

/* Section dividers */
.section-label {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-muted);
    padding: 0 0 0.4rem;
    margin-bottom: 0.5rem;
    border-bottom: 1px solid var(--color-line);
}

/* ------------------------------------------------------------
   12. STEP INDICATORS (wizard / form steps)
   ------------------------------------------------------------ */
.steps {
    display: flex;
    align-items: center;
    gap: 0;
    margin-bottom: 1.25rem;
}

.step {
    display: flex;
    align-items: center;
    flex: 1;
}

.step__dot {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background-color: var(--color-line);
    color: var(--color-muted);
    font-size: 0.75rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all var(--transition);
}

.step--active .step__dot {
    background: var(--color-primary);
    color: #fff;
    box-shadow: 0 0 0 4px rgba(2, 132, 199, 0.20);
}

.step--done .step__dot {
    background: var(--color-success);
    color: #fff;
}

.step__line {
    flex: 1;
    height: 2px;
    background-color: var(--color-line);
    transition: background-color var(--transition);
}

.step--done + .step .step__line,
.step--done .step__line {
    background-color: var(--color-success);
}

/* ------------------------------------------------------------
   13. LOADING / SPINNER OVERLAY
   ------------------------------------------------------------ */
.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.85);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    z-index: 9999;
    backdrop-filter: blur(4px);
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--color-line);
    border-top-color: var(--color-primary-light);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.loading-text {
    font-size: 0.9rem;
    color: var(--color-muted);
    text-align: center;
}

/* Inline skeleton loader */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--color-panel) 25%,
        var(--color-panel-hover) 50%,
        var(--color-panel) 75%
    );
    background-size: 200% 100%;
    animation: skeleton-shimmer 1.5s infinite;
    border-radius: var(--radius-sm);
}

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

/* ------------------------------------------------------------
   14. EMPTY STATE
   ------------------------------------------------------------ */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--color-muted);
}

.empty-state__icon {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    opacity: 0.4;
}

.empty-state__title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 0.4rem;
}

.empty-state__text {
    font-size: 0.875rem;
    color: var(--color-muted);
    max-width: 280px;
    margin: 0 auto 1.25rem;
}

/* ------------------------------------------------------------
   15. UTILITY CLASSES
   ------------------------------------------------------------ */

/* Text colors */
.text-primary   { color: var(--color-primary-light) !important; }
.text-muted     { color: var(--color-muted)         !important; }
.text-success   { color: var(--color-success)       !important; }
.text-danger    { color: var(--color-error)         !important; }
.text-warning   { color: var(--color-warning)       !important; }
.text-info      { color: var(--color-info)          !important; }
.text-gold      { color: var(--color-gold)          !important; }

/* Background utilities */
.bg-panel       { background-color: var(--color-panel)   !important; }
.bg-panel-hover { background-color: var(--color-panel-hover) !important; }
.bg-line        { background-color: var(--color-line)    !important; }
.bg-success-soft { background-color: var(--color-success-bg) !important; }
.bg-error-soft   { background-color: var(--color-error-bg)   !important; }
.bg-warning-soft { background-color: var(--color-warning-bg) !important; }
.bg-info-soft    { background-color: var(--color-info-bg)    !important; }
.bg-gold-soft    { background-color: var(--color-gold-bg)    !important; }

/* Borders */
.border-line    { border-color: var(--color-line)    !important; }
.border-primary { border-color: var(--color-primary) !important; }

/* Border radius helpers */
.rounded-app    { border-radius: var(--radius)    !important; }
.rounded-app-sm { border-radius: var(--radius-sm) !important; }
.rounded-app-lg { border-radius: var(--radius-lg) !important; }
.rounded-pill   { border-radius: var(--radius-pill) !important; }

/* Typography */
.font-mono    { font-family: var(--font-mono) !important; }
.fw-semibold  { font-weight: 600 !important; }
.fw-extrabold { font-weight: 800 !important; }
.text-xxs     { font-size: 0.65rem !important; }
.text-xs      { font-size: 0.75rem !important; }
.text-sm      { font-size: 0.875rem !important; }

/* Spacing */
.gap-1  { gap: 0.25rem !important; }
.gap-2  { gap: 0.5rem  !important; }
.gap-3  { gap: 0.75rem !important; }
.gap-4  { gap: 1rem    !important; }

/* Flex helpers */
.flex-center { display: flex !important; align-items: center !important; justify-content: center !important; }
.flex-between { display: flex !important; align-items: center !important; justify-content: space-between !important; }
.flex-start  { display: flex !important; align-items: center !important; }

/* Dividers */
.divider {
    border: none;
    border-top: 1px solid var(--color-line);
    margin: 1rem 0;
}

/* Scroll shadow for sticky headers */
.scroll-shadow {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.30);
}

/* Tap highlight removal */
.no-tap { -webkit-tap-highlight-color: transparent; }

/* Transition helpers */
.transition { transition: all var(--transition) !important; }

/* Cursor */
.cursor-pointer { cursor: pointer !important; }

/* Overflow clip */
.overflow-clip { overflow: hidden !important; }

/* Safe area padding */
.pb-safe { padding-bottom: env(safe-area-inset-bottom, 0px) !important; }
.pt-safe { padding-top: env(safe-area-inset-top, 0px) !important; }

/* ------------------------------------------------------------
   16. GRADIENTS
   ------------------------------------------------------------ */
.gradient-primary {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary-light));
}

.gradient-gold {
    background: linear-gradient(135deg, #FACC15, #F59E0B);
}

.gradient-success {
    background: linear-gradient(135deg, #059669, #10B981);
}

.gradient-dark {
    background: linear-gradient(180deg, var(--color-panel), var(--color-bg));
}

.gradient-panel {
    background: linear-gradient(135deg, #1E293B, #263449);
}

/* Text gradients */
.text-gradient-primary {
    background: linear-gradient(135deg, var(--color-primary-light), #38BDF8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-gradient-gold {
    background: linear-gradient(135deg, #FACC15, #F59E0B);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Glow effects */
.glow-primary { box-shadow: 0 0 20px rgba(2, 132, 199, 0.35) !important; }
.glow-gold    { box-shadow: 0 0 20px rgba(250, 204, 21, 0.30) !important; }
.glow-success { box-shadow: 0 0 20px rgba(16, 185, 129, 0.30) !important; }

/* ------------------------------------------------------------
   17. RESPONSIVE
   ------------------------------------------------------------ */
@media (min-width: 640px) {
    :root {
        --page-padding: 1.5rem;
    }

    .page-content {
        padding-top: 1.5rem;
    }
}

@media (min-width: 1024px) {
    /* On desktop, hide bottom nav and show sidebar instead */
    .bottom-nav {
        display: none;
    }

    body {
        padding-bottom: 0;
    }

    .page-content {
        max-width: 800px;
    }
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}