/*
  DocForensic — "Indigo Aurora" visual redesign layer.
  Scope: SITE-WIDE elements only — navbar, mobile offcanvas menu, footer,
  the shared responsive tool grid (also used by "Explore More Tools" on
  individual tool pages), a few dark-mode fixes, and the global smooth
  theme-transition. Loaded on every page.

  Everything homepage-specific (hero section, search bar, tool listing,
  "Why us" info cards, FAQ, newsletter card) lives in public/css/home.css
  instead, which is loaded ONLY on the homepage — edit that file for any
  homepage-only change, not this one.

  All new custom classes are prefixed .df- per the brief. Existing
  Bootstrap/theme classes (.site-navbar, .accordion-button, .footer, etc.)
  are also directly overridden here, deliberately — the brief explicitly
  calls for overriding Bootstrap's own component defaults rather than
  fighting them from a wrapper class.
*/

/* ==========================================================================
   1. DESIGN TOKENS
   ========================================================================== */

:root {
    /* Spacing scale (compact — this redesign runs ~40% tighter than the
       existing --space-* scale for the four sections it touches) */
    --df-space-1: 0.25rem;
    --df-space-2: 0.5rem;
    --df-space-3: 0.75rem;
    --df-space-4: 1rem;
    --df-space-5: 1.5rem;
    --df-space-6: 2rem;
    --df-space-7: 2.75rem;
    --df-space-8: 3.5rem;

    /* Radius scale */
    --df-radius-sm: 0.5rem;
    --df-radius-md: 0.85rem;
    --df-radius-lg: 1.25rem;
    --df-radius-xl: 1.75rem;
    --df-radius-pill: 999px;

    /* Single shadow style, diffused + tinted by the accent */
    --df-shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
    --df-shadow-md: 0 12px 28px -8px rgba(var(--bs-primary-rgb), 0.22), 0 4px 10px rgba(15, 23, 42, 0.06);
    --df-shadow-lg: 0 24px 48px -12px rgba(var(--bs-primary-rgb), 0.28), 0 8px 20px rgba(15, 23, 42, 0.08);

    /* Motion */
    --df-ease: cubic-bezier(0.4, 0, 0.2, 1);
    --df-transition-fast: 160ms var(--df-ease);
    --df-transition: 260ms var(--df-ease);
    --df-transition-slow: 480ms var(--df-ease);

    /* Accent — Indigo → Violet, reusing the site's existing brand primary */
    --df-accent: var(--color-primary);
    --df-accent-2: #a855f7;
    --df-accent-gradient: linear-gradient(135deg, var(--df-accent) 0%, var(--df-accent-2) 100%);
    --df-accent-soft: var(--color-primary-soft);
    --df-border: var(--color-border);
    --df-surface: var(--color-surface);
    --df-surface-soft: var(--color-surface-soft);
    --df-text: var(--color-text);
    --df-muted: var(--color-muted);

    --df-glow-1: rgba(var(--bs-primary-rgb), 0.16);
    --df-glow-2: rgba(168, 85, 247, 0.14);
}

[data-bs-theme="dark"] {
    --df-shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.28);
    --df-shadow-md: 0 14px 32px -8px rgba(var(--bs-primary-rgb), 0.32), 0 4px 14px rgba(0, 0, 0, 0.32);
    --df-shadow-lg: 0 28px 56px -12px rgba(var(--bs-primary-rgb), 0.4), 0 10px 24px rgba(0, 0, 0, 0.4);
    --df-glow-1: rgba(var(--bs-primary-rgb), 0.22);
    --df-glow-2: rgba(168, 85, 247, 0.18);
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
        scroll-behavior: auto !important;
    }
}

/* ==========================================================================
   2. SCROLL-REVEAL (IntersectionObserver-driven, see df-redesign.js)
   ========================================================================== */

.df-reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity var(--df-transition-slow), transform var(--df-transition-slow);
}

.df-reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    .df-reveal {
        opacity: 1;
        transform: none;
    }
}

/* ==========================================================================
   3. NAVBAR
   ========================================================================== */

.site-navbar.df-navbar {
    position: sticky;
    top: 0;
    z-index: 1040;
    min-height: 72px;
    padding: 0.7rem 0;
    background: rgba(var(--bs-body-bg-rgb, 255, 255, 255), 0.72);
    background: color-mix(in srgb, var(--color-navbar, var(--df-surface)) 88%, transparent);
    -webkit-backdrop-filter: blur(14px) saturate(160%);
    backdrop-filter: blur(14px) saturate(160%);
    border-bottom: 1px solid transparent;
    box-shadow: none;
    transition: border-color var(--df-transition), box-shadow var(--df-transition), background-color var(--df-transition);
}

.site-navbar.df-navbar.df-navbar-scrolled {
    border-bottom-color: var(--df-border);
    box-shadow: var(--df-shadow-sm);
}

.df-navbar .site-brand {
    gap: 0.6rem;
}

.df-navbar .brand-mark {
    background: var(--df-accent-gradient);
    color: #fff;
    box-shadow: var(--df-shadow-sm);
}

.df-navbar .brand-text {
    font-weight: 800;
    letter-spacing: -0.01em;
}

/* Desktop nav links — underline on hover/active, no filled pill */
.df-desktop-nav {
    gap: var(--df-space-2);
}

.df-navbar .site-nav {
    gap: 0.15rem;
}

.df-navbar .site-nav .nav-link {
    position: relative;
    padding: 0.55rem 0.7rem !important;
    color: var(--df-muted) !important;
    font-weight: 600;
    background: transparent !important;
    box-shadow: none !important;
    transition: color var(--df-transition-fast);
}

.df-navbar .site-nav .nav-link::after {
    content: '';
    position: absolute;
    left: 0.7rem;
    right: 0.7rem;
    bottom: 0.32rem;
    height: 2px;
    background: var(--df-accent-gradient);
    border-radius: var(--df-radius-pill);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--df-transition);
}

.df-navbar .site-nav .nav-link:hover {
    color: var(--df-text) !important;
}

.df-navbar .site-nav .nav-link:hover::after,
.df-navbar .site-nav .nav-link.active::after {
    transform: scaleX(1);
}

.df-navbar .site-nav .nav-link.active {
    color: var(--df-text) !important;
}

.df-navbar .dropdown-menu {
    border: 1px solid var(--df-border);
    border-radius: var(--df-radius-md);
    box-shadow: var(--df-shadow-md);
    padding: 0.4rem;
    margin-top: 0.5rem !important;
}

.df-navbar .dropdown-item {
    border-radius: var(--df-radius-sm);
}

/* Theme toggle — proper icon button, not a bare floating icon */
.df-icon-btn {
    -webkit-appearance: none;
    appearance: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    min-width: 42px;
    padding: 0;
    border: 1px solid var(--df-border);
    border-radius: var(--df-radius-md);
    background-color: var(--df-surface-soft);
    color: var(--df-text) !important;
    font-size: 1.05rem;
    line-height: 1;
    transition: border-color var(--df-transition-fast), background-color var(--df-transition-fast), transform var(--df-transition-fast), color var(--df-transition-fast);
}

.df-icon-btn .theme-toggle-icon {
    color: inherit;
}

.df-icon-btn:hover {
    border-color: rgba(var(--bs-primary-rgb), 0.4);
    background: var(--df-accent-soft);
    color: var(--df-accent);
    transform: translateY(-1px);
}

.df-icon-btn:active {
    transform: translateY(0);
}

/* Ghost + solid account buttons — clear hierarchy, same labels */
.df-btn-ghost,
.df-btn-solid {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0 1.15rem;
    border-radius: var(--df-radius-md);
    font-weight: 700;
    font-size: 0.92rem;
    text-decoration: none;
    white-space: nowrap;
    transition: transform var(--df-transition-fast), box-shadow var(--df-transition-fast), background-color var(--df-transition-fast), border-color var(--df-transition-fast), color var(--df-transition-fast);
}

.df-btn-ghost {
    color: var(--df-text) !important;
    background: transparent;
    border: 1px solid transparent;
}

.df-btn-ghost:hover {
    background: var(--df-surface-soft);
    border-color: var(--df-border);
    color: var(--df-text) !important;
}

.df-btn-solid {
    color: var(--color-button-text, #fff) !important;
    background: var(--df-accent-gradient);
    border: 1px solid transparent;
    box-shadow: var(--df-shadow-sm);
}

.df-btn-solid:hover {
    transform: translateY(-1px);
    box-shadow: var(--df-shadow-md);
    color: var(--color-button-text, #fff) !important;
}

.df-btn-solid:active,
.df-btn-ghost:active {
    transform: translateY(0);
}

/* Mobile hamburger — custom SVG icon instead of Bootstrap's default */
.df-navbar-toggler {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0;
    border: 1px solid var(--df-border);
    border-radius: var(--df-radius-md);
    background: var(--df-surface-soft);
    box-shadow: none !important;
}

.df-navbar-toggler:focus {
    box-shadow: var(--focus-ring) !important;
}

.df-navbar-toggler-icon {
    display: inline-flex;
    color: var(--df-text);
}

/* ==========================================================================
   4. OFFCANVAS MOBILE MENU
   ========================================================================== */

.df-offcanvas {
    width: min(86vw, 360px) !important;
    background: var(--df-surface);
    border-left: 1px solid var(--df-border);
    color: var(--df-text);
}

.df-offcanvas .offcanvas-header {
    padding: 1.1rem 1.25rem;
    border-bottom: 1px solid var(--df-border);
}

.df-offcanvas .offcanvas-title {
    font-weight: 800;
    letter-spacing: -0.01em;
}

.df-offcanvas .offcanvas-body {
    padding: 1.25rem;
}

.df-mobile-nav {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.df-mobile-nav .nav-item {
    width: 100%;
}

.df-mobile-nav .nav-link {
    display: flex;
    align-items: center;
    min-height: 44px;
    padding: 0.6rem 0.85rem !important;
    border-radius: var(--df-radius-md);
    color: var(--df-text) !important;
    font-weight: 600;
    background: transparent !important;
}

.df-mobile-nav .nav-link:hover,
.df-mobile-nav .nav-link.active {
    background: var(--df-accent-soft) !important;
    color: var(--df-accent) !important;
}

.df-mobile-nav .dropdown-menu {
    position: static !important;
    border: none;
    box-shadow: none;
    background: var(--df-surface-soft);
    border-radius: var(--df-radius-md);
    margin: 0.2rem 0 0.3rem !important;
    padding: 0.25rem;
}

.df-offcanvas-actions {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    margin-top: var(--df-space-4);
    padding-top: var(--df-space-4);
    border-top: 1px solid var(--df-border);
}

.df-offcanvas-actions .df-btn-ghost,
.df-offcanvas-actions .df-btn-solid,
.df-offcanvas-actions .df-icon-btn {
    width: 100%;
    min-height: 46px;
}

.df-offcanvas-actions .df-icon-btn {
    width: 100%;
    justify-content: flex-start;
    gap: 0.6rem;
    padding: 0 0.9rem;
    font-weight: 600;
    font-size: 0.92rem;
}

.df-offcanvas-actions .df-icon-btn::after {
    content: 'Toggle theme';
}

/* ==========================================================================
   5. FOOTER
   ========================================================================== */

.df-footer {
    position: relative;
    margin-top: var(--df-space-6) !important;
    padding: clamp(2rem, 4vw, 3rem) 0 var(--df-space-4) !important;
    background: var(--color-footer, var(--df-surface-soft)) !important;
    border-top: 1px solid var(--df-border) !important;
    box-shadow: none !important;
}

.df-footer .footer-heading {
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    margin-bottom: var(--df-space-3) !important;
}

.df-footer .footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.df-footer .footer-links li {
    line-height: 1.3;
}

.df-footer .footer-description,
.df-footer .footer-note {
    font-size: 0.86rem;
    line-height: 1.6;
}

.df-footer .footer-socials {
    margin-top: var(--df-space-3) !important;
}

.df-footer .footer-socials a {
    width: 2.2rem;
    height: 2.2rem;
    border-radius: var(--df-radius-md);
}

.df-footer .footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--df-space-2);
    margin-top: var(--df-space-5) !important;
    padding-top: var(--df-space-3) !important;
    padding-bottom: 0 !important;
    border-top: 1px solid var(--df-border);
    font-size: 0.82rem;
}

/* Mobile: columns collapse into an accordion (separate markup rendered
   only at this breakpoint — see layouts/app.blade.php) */
.df-footer-mobile-accordion .accordion-item {
    background: transparent !important;
    border: none !important;
    border-bottom: 1px solid var(--df-border) !important;
    border-radius: 0 !important;
}

.df-footer-mobile-accordion .accordion-button {
    padding: 0.85rem 0 !important;
    background: transparent !important;
    box-shadow: none !important;
    font-size: 0.85rem;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--df-text) !important;
}

.df-footer-mobile-accordion .accordion-button::after {
    display: none !important;
    content: none !important;
}

.df-footer-mobile-accordion .accordion-body {
    padding: 0 0 1rem !important;
}

/* Reduce the empty gap sitting above the footer on frontend pages */
main.tool-main.py-5 {
    padding-bottom: var(--df-space-5) !important;
}

.tool-newsletter-section {
    padding-bottom: 0 !important;
}

/* ==========================================================================
   6. RESPONSIVE TOOL GRID — hard guarantee, wins over any admin-configured
   --cards-per-row (and any other rule) on small/medium screens. Uses
   auto-fill so the column count is computed from actual available width
   instead of a fixed number per breakpoint — naturally lands on 4 columns
   on most tablets, 3 on narrower tablets/large phones, 2 on small phones,
   with no dependency on hitting an exact breakpoint width.
   ========================================================================== */

@media (max-width: 991.98px) {
    .home-tools-grid:not(.df-tool-list) {
        grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)) !important;
    }
}

@media (max-width: 359.98px) {
    .home-tools-grid:not(.df-tool-list) {
        grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
    }
}

/* ==========================================================================
   7. DARK MODE FIXES — components with hardcoded light-only colors that
   never got a [data-bs-theme="dark"] counterpart, found via audit: the
   merge/split tool's toolbar (icon group, segment group, add button), and
   the error modal shown on failed uploads. Both are frequently-hit UI, so
   in dark mode they were rendering as solid white patches with no dark
   variant — this restores real contrast for all of them.
   ========================================================================== */

[data-bs-theme="dark"] .toolbar-segment-group,
[data-bs-theme="dark"] .toolbar-icon-group,
[data-bs-theme="dark"] .toolbar-add-btn {
    background: var(--color-surface) !important;
    border-color: var(--color-border) !important;
}

[data-bs-theme="dark"] .toolbar-segment-btn {
    color: var(--color-muted) !important;
}

[data-bs-theme="dark"] .toolbar-segment-btn.active {
    background: var(--color-primary-soft) !important;
    color: var(--color-primary) !important;
}

[data-bs-theme="dark"] .toolbar-add-btn {
    color: var(--color-text) !important;
}

[data-bs-theme="dark"] .toolbar-add-btn:hover {
    background: var(--color-surface-soft) !important;
    border-color: var(--color-border-strong) !important;
}

[data-bs-theme="dark"] .toolbar-icon-btn {
    background: var(--color-surface) !important;
    color: var(--color-muted) !important;
    border-right-color: var(--color-border) !important;
}

[data-bs-theme="dark"] .toolbar-icon-btn:hover {
    background: var(--color-surface-soft) !important;
    color: var(--color-text) !important;
}

[data-bs-theme="dark"] .toolbar-icon-btn.btn-trash-action {
    color: var(--color-muted) !important;
}

[data-bs-theme="dark"] .toolbar-icon-btn.btn-trash-action:hover {
    color: #f87171 !important;
    background: rgba(239, 68, 68, 0.16) !important;
}

[data-bs-theme="dark"] .global-mode-tabs .nav-link:not(.active) {
    background: transparent !important;
    color: var(--color-muted) !important;
}

[data-bs-theme="dark"] .global-card-icon-btn:hover {
    background: var(--color-surface-soft) !important;
    color: var(--color-text) !important;
}

[data-bs-theme="dark"] .error-modal-card {
    background: var(--color-surface) !important;
    border-color: var(--color-border) !important;
}

[data-bs-theme="dark"] .error-modal-title {
    color: var(--color-text) !important;
}

[data-bs-theme="dark"] .error-modal-message {
    color: var(--color-muted) !important;
}

/* ==========================================================================
   8. SMOOTH THEME TRANSITION — toggling dark mode currently snaps every
   color instantly with no animation. Elements that already define their
   own transition (buttons, links, etc.) keep it unchanged since their more
   specific rule wins; everything else fades smoothly. Respects
   prefers-reduced-motion via the global rule already defined above.
   ========================================================================== */

*, *::before, *::after {
    transition: background-color 0.25s ease, color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}