/* ==========================================================================
   Indi Vision Design System for 38f.co (indi-38f-theme.css)
   Typography: Plus Jakarta Sans (Headings), Inter (Body/UI), JetBrains Mono (Short Links)
   Dual-Theme Palette: Light Default & Dark Mode (html.dark)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@500;600&family=Plus+Jakarta+Sans:wght@600;700;800&display=swap');

:root {
    --iv-font-heading: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --iv-font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --iv-font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

    /* Light Mode Tokens (Indi Vision Canonical) */
    --iv-bg: #F5F7FB;
    --iv-bg-alt: #EDF1F7;
    --iv-surface: #FFFFFF;
    --iv-surface-2: #F3F5F9;
    --iv-surface-3: #E2E8F0;
    --iv-header-bg: rgba(255, 255, 255, 0.88);
    --iv-sidebar-bg: #FFFFFF;
    --iv-text: #0B1120;
    --iv-text-soft: #334155;
    --iv-muted: #475569;
    --iv-subtle: #64748B;

    --iv-primary: #2563EB;
    --iv-indigo: #4F46E5;
    --iv-primary-hover: #1D4ED8;
    --iv-indigo-hover: #4338CA;
    --iv-gradient: linear-gradient(135deg, #2563EB 0%, #4F46E5 100%);
    --iv-gradient-hover: linear-gradient(135deg, #1D4ED8 0%, #4338CA 100%);
    --iv-gradient-soft: linear-gradient(135deg, rgba(37, 99, 235, 0.10) 0%, rgba(79, 70, 229, 0.10) 100%);
    --iv-hero-bg:
        radial-gradient(ellipse 90% 45% at 50% -8%, rgba(79, 70, 229, 0.12), rgba(37, 99, 235, 0.06) 48%, transparent 76%),
        linear-gradient(180deg, #FFFFFF 0%, #F5F7FB 100%);

    --iv-border: rgba(15, 23, 42, 0.08);
    --iv-border-strong: rgba(15, 23, 42, 0.15);
    --iv-border-accent: rgba(37, 99, 235, 0.28);

    --iv-radius-card: 16px;
    --iv-radius-btn: 12px;
    --iv-radius-pill: 999px;

    --iv-shadow-card: 0 10px 30px -10px rgba(15, 23, 42, 0.07), 0 1px 3px rgba(15, 23, 42, 0.04);
    --iv-shadow-card-hover: 0 18px 36px -12px rgba(37, 99, 235, 0.14), 0 4px 12px rgba(15, 23, 42, 0.06);
    --iv-shadow-btn: 0 6px 18px -4px rgba(37, 99, 235, 0.38);
    --iv-shadow-btn-hover: 0 10px 24px -4px rgba(29, 78, 216, 0.50);

    --iv-shortlink-bg: rgba(37, 99, 235, 0.07);
    --iv-shortlink-border: rgba(37, 99, 235, 0.20);
    --iv-shortlink-color: #2563EB;
}

html.dark,
:root.dark,
html[data-theme="dark"] {
    /* Dark Mode Tokens (Indi Vision Canonical) */
    --iv-bg: #06070B;
    --iv-bg-alt: #0A0C12;
    --iv-surface: #0F1117;
    --iv-surface-2: #161922;
    --iv-surface-3: #1E2330;
    --iv-header-bg: rgba(15, 17, 23, 0.88);
    --iv-sidebar-bg: #0F1117;
    --iv-text: #F4F6FA;
    --iv-text-soft: #D1D6E2;
    --iv-muted: #94A3B8;
    --iv-subtle: #64748B;

    --iv-primary: #3B82F6;
    --iv-indigo: #6366F1;
    --iv-primary-hover: #2563EB;
    --iv-indigo-hover: #4F46E5;
    --iv-gradient: linear-gradient(135deg, #2563EB 0%, #4F46E5 100%);
    --iv-gradient-hover: linear-gradient(135deg, #1D4ED8 0%, #4338CA 100%);
    --iv-gradient-soft: linear-gradient(135deg, rgba(59, 130, 246, 0.16) 0%, rgba(99, 102, 241, 0.16) 100%);
    --iv-hero-bg:
        radial-gradient(ellipse 90% 45% at 50% -8%, rgba(99, 102, 241, 0.22), rgba(37, 99, 235, 0.10) 48%, transparent 76%),
        linear-gradient(180deg, #090B11 0%, #06070B 100%);

    --iv-border: rgba(255, 255, 255, 0.09);
    --iv-border-strong: rgba(255, 255, 255, 0.18);
    --iv-border-accent: rgba(99, 102, 241, 0.38);

    --iv-shadow-card: 0 12px 32px -10px rgba(0, 0, 0, 0.52), 0 1px 3px rgba(0, 0, 0, 0.30);
    --iv-shadow-card-hover: 0 20px 42px -12px rgba(79, 70, 229, 0.28), 0 4px 14px rgba(0, 0, 0, 0.45);
    --iv-shadow-btn: 0 6px 20px -4px rgba(37, 99, 235, 0.48);
    --iv-shadow-btn-hover: 0 10px 26px -4px rgba(59, 130, 246, 0.62);

    --iv-shortlink-bg: rgba(59, 130, 246, 0.14);
    --iv-shortlink-border: rgba(99, 102, 241, 0.32);
    --iv-shortlink-color: #93C5FD;
}

/* ==========================================================================
   1. Base Typography & Surfaces
   ========================================================================== */
html, body {
    font-family: var(--iv-font-sans) !important;
    color: var(--iv-text) !important;
    background-color: var(--iv-bg) !important;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6,
.h1, .h2, .h3, .h4, .h5, .h6,
.display-1, .display-2, .display-3, .display-4 {
    font-family: var(--iv-font-heading) !important;
    color: var(--iv-text);
    letter-spacing: -0.028em;
    line-height: 1.16;
}

.display-4 {
    font-weight: 800 !important;
    letter-spacing: -0.035em !important;
}

.bg-base-0 {
    background-color: var(--iv-surface) !important;
}

.bg-base-1 {
    background-color: var(--iv-bg) !important;
}

.bg-base-2 {
    background-color: var(--iv-surface-2) !important;
}

.text-muted {
    color: var(--iv-muted) !important;
}

.text-dark {
    color: var(--iv-text) !important;
}

.text-secondary {
    color: var(--iv-text-soft) !important;
}

a {
    color: var(--iv-primary);
    transition: color 0.16s ease, background-color 0.16s ease, border-color 0.16s ease, box-shadow 0.16s ease;
}

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

/* ==========================================================================
   2. Header, Topbar & Language Switcher (EN | UA | RU)
   ========================================================================== */
#header.header {
    background: var(--iv-header-bg) !important;
    backdrop-filter: saturate(180%) blur(16px);
    -webkit-backdrop-filter: saturate(180%) blur(16px);
    border-bottom: 1px solid var(--iv-border) !important;
    box-shadow: 0 4px 20px -6px rgba(15, 23, 42, 0.05) !important;
}

@media (min-width: 992px) {
    #header.iv-auth-header {
        margin-left: 250px;
        width: calc(100% - 250px) !important;
    }
    [dir="rtl"] #header.iv-auth-header {
        margin-left: 0;
        margin-right: 250px;
    }
}

.iv-brand-wrap {
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.iv-brand-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 3px 10px;
    border-radius: var(--iv-radius-pill);
    font-family: var(--iv-font-mono);
    font-size: 11px;
    font-weight: 600;
    color: var(--iv-primary);
    background: var(--iv-shortlink-bg);
    border: 1px solid var(--iv-shortlink-border);
    letter-spacing: 0.02em;
    white-space: nowrap;
}

.iv-brand-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #10B981;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.18);
}

/* Language Switcher Dropdown (UA / EN / RU) */
.iv-lang-dropdown {
    position: relative;
    display: inline-flex;
    align-items: center;
}

.iv-lang-trigger {
    height: 36px;
    padding: 0 12px;
    border-radius: var(--iv-radius-pill) !important;
    background: var(--iv-surface-2) !important;
    border: 1px solid var(--iv-border) !important;
    color: var(--iv-text) !important;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: var(--iv-font-sans);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.16s ease;
    outline: none !important;
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.03);
}

.iv-lang-trigger:hover,
.iv-lang-dropdown.show .iv-lang-trigger {
    border-color: var(--iv-border-accent) !important;
    background: var(--iv-shortlink-bg) !important;
    color: var(--iv-primary) !important;
}

.iv-lang-trigger .iv-lang-globe {
    width: 15px;
    height: 15px;
    color: var(--iv-primary);
    flex-shrink: 0;
}

.iv-lang-trigger .iv-lang-code {
    font-family: var(--iv-font-mono);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.03em;
}

.iv-lang-trigger .iv-lang-caret {
    width: 12px;
    height: 12px;
    color: var(--iv-muted);
    transition: transform 0.18s ease;
    flex-shrink: 0;
}

.iv-lang-dropdown.show .iv-lang-trigger .iv-lang-caret {
    transform: rotate(180deg);
    color: var(--iv-primary);
}

.iv-lang-menu {
    min-width: 84px !important;
    width: 84px !important;
    padding: 5px !important;
    border-radius: 12px !important;
    border: 1px solid var(--iv-border-strong) !important;
    background: var(--iv-surface) !important;
    box-shadow: 0 18px 38px -10px rgba(15, 23, 42, 0.18), 0 2px 6px rgba(15, 23, 42, 0.06) !important;
    margin-top: 6px !important;
}

.dropup .iv-lang-menu {
    margin-top: 0 !important;
    margin-bottom: 6px !important;
}

.iv-lang-option {
    display: flex !important;
    align-items: center;
    justify-content: space-between;
    gap: 6px;
    padding: 6px 10px !important;
    border-radius: 8px !important;
    font-family: var(--iv-font-mono) !important;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.03em;
    color: var(--iv-text-soft) !important;
    text-decoration: none !important;
    transition: all 0.14s ease;
}

.iv-lang-option + .iv-lang-option {
    margin-top: 2px;
}

.iv-lang-option:hover {
    background: var(--iv-surface-2) !important;
    color: var(--iv-text) !important;
}

.iv-lang-option.is-active {
    background: var(--iv-gradient-soft) !important;
    color: var(--iv-primary) !important;
    font-weight: 700;
}

.iv-lang-opt-code {
    font-family: var(--iv-font-mono);
    font-size: 12px;
    font-weight: 600;
}

.iv-lang-check {
    font-size: 12.5px;
    font-weight: 700;
    color: var(--iv-primary);
}

/* External Link Pill (Indi.Vision ↗) */
.iv-external-pill {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    height: 36px;
    padding: 0 12px;
    border-radius: var(--iv-radius-pill);
    font-family: var(--iv-font-sans);
    font-size: 13px;
    font-weight: 600;
    color: var(--iv-text-soft) !important;
    background: var(--iv-surface-2);
    border: 1px solid var(--iv-border);
    text-decoration: none !important;
    white-space: nowrap;
    transition: all 0.16s ease;
}

.iv-external-pill:hover {
    color: var(--iv-primary) !important;
    border-color: var(--iv-border-accent);
    background: var(--iv-shortlink-bg);
    transform: translateY(-1px);
}

.iv-external-pill .iv-arrow {
    font-size: 12px;
    opacity: 0.8;
}

/* Header Theme Toggle Button */
.iv-theme-btn {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--iv-surface-2);
    border: 1px solid var(--iv-border);
    color: var(--iv-text-soft);
    cursor: pointer;
    transition: all 0.16s ease;
}

.iv-theme-btn:hover {
    color: var(--iv-primary);
    border-color: var(--iv-border-accent);
    background: var(--iv-shortlink-bg);
}

/* ==========================================================================
   3. Cards, Modals, Dropdowns & Containers
   ========================================================================== */
.card {
    background-color: var(--iv-surface) !important;
    border: 1px solid var(--iv-border) !important;
    border-radius: var(--iv-radius-card) !important;
    box-shadow: var(--iv-shadow-card) !important;
    transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.iv-feature-card:hover,
.iv-stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--iv-shadow-card-hover) !important;
    border-color: var(--iv-border-accent) !important;
}

.card-header {
    background-color: transparent !important;
    border-bottom: 1px solid var(--iv-border) !important;
    padding: 1rem 1.35rem;
    font-family: var(--iv-font-heading);
    font-weight: 700;
}

.card-footer {
    background-color: var(--iv-surface-2) !important;
    border-top: 1px solid var(--iv-border) !important;
    border-bottom-left-radius: calc(var(--iv-radius-card) - 1px) !important;
    border-bottom-right-radius: calc(var(--iv-radius-card) - 1px) !important;
}

.modal-content {
    background-color: var(--iv-surface) !important;
    border: 1px solid var(--iv-border-strong) !important;
    border-radius: var(--iv-radius-card) !important;
    box-shadow: 0 24px 54px -12px rgba(15, 23, 42, 0.25) !important;
}

.modal-header {
    border-bottom: 1px solid var(--iv-border) !important;
}

.modal-footer {
    border-top: 1px solid var(--iv-border) !important;
}

.dropdown-menu {
    background-color: var(--iv-surface) !important;
    border: 1px solid var(--iv-border-strong) !important;
    border-radius: 14px !important;
    box-shadow: 0 16px 36px -8px rgba(15, 23, 42, 0.16) !important;
    padding: 0.45rem !important;
}

.dropdown-item {
    border-radius: 9px;
    padding: 0.45rem 0.85rem;
    font-weight: 500;
    color: var(--iv-text-soft);
}

.dropdown-item:hover,
.dropdown-item:focus {
    background-color: var(--iv-surface-2) !important;
    color: var(--iv-primary) !important;
}

/* ==========================================================================
   4. Buttons, Badges & Form Controls
   ========================================================================== */
.btn {
    border-radius: var(--iv-radius-btn) !important;
    font-family: var(--iv-font-sans);
    font-weight: 600 !important;
    letter-spacing: -0.01em;
    transition: all 0.18s ease !important;
}

.btn-sm {
    border-radius: 9px !important;
}

.btn-primary {
    background: var(--iv-gradient) !important;
    border: 1px solid rgba(255, 255, 255, 0.12) !important;
    color: #FFFFFF !important;
    box-shadow: var(--iv-shadow-btn) !important;
}

.btn-primary:hover,
.btn-primary:focus,
.btn-primary:active {
    background: var(--iv-gradient-hover) !important;
    border-color: #1D4ED8 !important;
    color: #FFFFFF !important;
    box-shadow: var(--iv-shadow-btn-hover) !important;
    transform: translateY(-1px);
}

.btn-outline-primary {
    color: var(--iv-primary) !important;
    border: 1px solid var(--iv-border-accent) !important;
    background-color: var(--iv-shortlink-bg) !important;
}

.btn-outline-primary:hover,
.btn-outline-primary:focus,
.btn-outline-primary.active {
    background: var(--iv-gradient) !important;
    border-color: transparent !important;
    color: #FFFFFF !important;
    box-shadow: var(--iv-shadow-btn) !important;
}

.btn-secondary {
    background-color: var(--iv-surface-2) !important;
    border: 1px solid var(--iv-border-strong) !important;
    color: var(--iv-text) !important;
}

.btn-secondary:hover {
    background-color: var(--iv-surface-3) !important;
    color: var(--iv-text) !important;
}

.form-control,
.custom-select {
    background-color: var(--iv-surface) !important;
    border: 1px solid var(--iv-border-strong) !important;
    border-radius: 11px !important;
    color: var(--iv-text) !important;
    font-family: var(--iv-font-sans);
    transition: border-color 0.16s ease, box-shadow 0.16s ease;
}

.form-control:focus,
.custom-select:focus {
    border-color: var(--iv-primary) !important;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.16) !important;
}

.badge {
    border-radius: var(--iv-radius-pill) !important;
    padding: 0.35em 0.75em !important;
    font-weight: 600 !important;
    letter-spacing: 0.01em;
}

/* ==========================================================================
   5. Short Links Typography (JetBrains Mono) & List Items
   ========================================================================== */
.iv-mono-link,
a[href*="/stats/"],
a[href*="/admin/links/"][href$="/edit"]:not(.dropdown-item),
input[name="url"].is-valid {
    font-family: var(--iv-font-mono) !important;
    font-weight: 500 !important;
    font-size: 0.93rem;
    letter-spacing: -0.01em;
}

a.iv-mono-link,
a[href*="/admin/links/"][href$="/edit"]:not(.dropdown-item) {
    display: inline-flex;
    align-items: center;
    padding: 2px 9px;
    border-radius: 8px;
    background: var(--iv-shortlink-bg);
    border: 1px solid var(--iv-shortlink-border);
    color: var(--iv-shortlink-color) !important;
    text-decoration: none !important;
    transition: all 0.15s ease;
}

a.iv-mono-link:hover,
a[href*="/admin/links/"][href$="/edit"]:not(.dropdown-item):hover {
    background: var(--iv-gradient);
    border-color: transparent;
    color: #FFFFFF !important;
    box-shadow: 0 3px 10px rgba(37, 99, 235, 0.25);
}

.list-group-item {
    background-color: transparent !important;
    border-color: var(--iv-border) !important;
    padding-top: 0.9rem;
    padding-bottom: 0.9rem;
}

/* ==========================================================================
   6. Authenticated Sidebar (.slide-menu) & Workspace
   ========================================================================== */
.slide-menu {
    background-color: var(--iv-sidebar-bg) !important;
    border-right: 1px solid var(--iv-border) !important;
    box-shadow: 4px 0 24px -10px rgba(15, 23, 42, 0.06) !important;
}

[dir="rtl"] .slide-menu {
    border-right: 0 !important;
    border-left: 1px solid var(--iv-border) !important;
}

.sidebar .nav-link {
    margin: 3px 12px;
    padding: 0.65rem 1rem !important;
    border-radius: 11px;
    border-right: 0 !important;
    font-weight: 500;
    color: var(--iv-text-soft) !important;
    transition: all 0.16s ease;
}

.sidebar .nav-link:hover {
    background: var(--iv-surface-2) !important;
    color: var(--iv-text) !important;
}

.sidebar .nav-link.active {
    background: var(--iv-gradient-soft) !important;
    color: var(--iv-primary) !important;
    font-weight: 600;
    border: 1px solid var(--iv-shortlink-border);
}

.sidebar .nav-link.active > .sidebar-icon {
    color: var(--iv-primary) !important;
}

.sidebar-footer {
    background: var(--iv-surface-2) !important;
    border-top: 1px solid var(--iv-border) !important;
}

.progress {
    background-color: var(--iv-surface-3) !important;
    border-radius: var(--iv-radius-pill) !important;
    overflow: hidden;
}

.progress-bar {
    background: var(--iv-gradient) !important;
}

/* ==========================================================================
   7. Public Hero, Login Visuals & Footer
   ========================================================================== */
.iv-hero-section {
    background: var(--iv-hero-bg) !important;
    border-bottom: 1px solid var(--iv-border);
    position: relative;
    overflow: hidden;
}

.iv-eyebrow-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 5px 14px;
    border-radius: var(--iv-radius-pill);
    background: var(--iv-shortlink-bg);
    border: 1px solid var(--iv-shortlink-border);
    color: var(--iv-shortlink-color);
    font-family: var(--iv-font-mono);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin-bottom: 1.25rem;
}

.iv-hero-title-accent {
    background: var(--iv-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.iv-trust-pills {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-top: 2rem;
}

.iv-trust-pill {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 6px 14px;
    border-radius: var(--iv-radius-pill);
    background: var(--iv-surface);
    border: 1px solid var(--iv-border);
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.03);
    font-size: 13px;
    font-weight: 500;
    color: var(--iv-text-soft);
}

.iv-login-visual {
    background:
        radial-gradient(circle at 20% 20%, rgba(59, 130, 246, 0.35), transparent 55%),
        linear-gradient(135deg, #0B1120 0%, #1E1B4B 50%, #1D4ED8 100%) !important;
    position: relative;
    overflow: hidden;
}

#footer.footer {
    background-color: var(--iv-surface) !important;
    border-top: 1px solid var(--iv-border) !important;
}