/* ────────────────────────────────────────────────────────────
   site.css  –  PDF to Image Converter  (compact dark theme)
──────────────────────────────────────────────────────────── */

:root {
    --clr-bg: #0f1117;
    --clr-surface: #1a1d27;
    --clr-border: #2d3048;
    --clr-primary: #6366f1;
    --clr-primary-hover: #4f52d9;
    --clr-success: #22c55e;
    --clr-text: #e2e8f0;
    --clr-muted: #94a3b8;
    --radius: 10px;
}

html, body {
    height: 100%;
    background: var(--clr-bg);
    color: var(--clr-text);
    font-family: 'Segoe UI', system-ui, sans-serif;
    font-size: 14px;
}

/* ── Navbar ────────────────────────────────── */
.navbar { border-bottom: 1px solid var(--clr-border); }
.build-badge {
    font-size: .68rem;
    color: #475569;
    font-family: monospace;
    letter-spacing: .03em;
}

/* ── Cards ─────────────────────────────────── */
.card {
    background: var(--clr-surface) !important;
    border: 1px solid var(--clr-border) !important;
    border-radius: var(--radius) !important;
    color: var(--clr-text);
}
.card-header {
    background: rgba(255,255,255,.04) !important;
    border-bottom: 1px solid var(--clr-border) !important;
}

/* ── Drop Zone ─────────────────────────────── */
.drop-zone {
    border: 2px dashed var(--clr-border);
    border-radius: var(--radius);
    padding: 1.25rem 1rem;
    text-align: center;
    cursor: pointer;
    transition: border-color .2s, background .2s;
    user-select: none;
}
.drop-zone:hover, .drop-zone.dragover {
    border-color: var(--clr-primary);
    background: rgba(99,102,241,.06);
}
.drop-zone:focus { outline: 2px solid var(--clr-primary); outline-offset: 2px; }
.drop-icon { font-size: 2rem; color: var(--clr-primary); }

/* ── Buttons ───────────────────────────────── */
.btn-primary {
    background: var(--clr-primary);
    border-color: var(--clr-primary);
    border-radius: 8px;
    font-weight: 600;
}
.btn-primary:hover {
    background: var(--clr-primary-hover);
    border-color: var(--clr-primary-hover);
}
.btn-success {
    background: var(--clr-success);
    border-color: var(--clr-success);
    border-radius: 8px;
    font-weight: 600;
}
.btn-xs {
    padding: .15rem .4rem;
    font-size: .75rem;
    border-radius: 5px;
    line-height: 1.4;
}
.btn-outline-primary { border-color: var(--clr-primary); color: var(--clr-primary); border-radius: 6px; }
.btn-outline-primary:hover { background: var(--clr-primary); color: #fff; }
.btn-outline-warning { border-color: #f59e0b; color: #f59e0b; border-radius: 6px; }
.btn-outline-warning:hover { background: #f59e0b; color: #000; }
.btn-outline-secondary {
    border-color: var(--clr-border); color: var(--clr-muted); border-radius: 6px;
}
.btn-outline-secondary:hover { background: var(--clr-border); color: var(--clr-text); }

/* ── Subtle states ─────────────────────────── */
.bg-success-subtle { background: rgba(34,197,94,.08) !important; }
.border-success-subtle { border-color: rgba(34,197,94,.25) !important; }
.bg-dark { background: #0a0c14 !important; }

/* ── Spinner ───────────────────────────────── */
@-webkit-keyframes spin { to { -webkit-transform: rotate(360deg); } }
@keyframes spin { to { transform: rotate(360deg); } }
.spin { display: inline-block; animation: spin 1s linear infinite; }

/* ── Forms ─────────────────────────────────── */
.form-control, .form-select {
    background: #12141e;
    border: 1px solid var(--clr-border);
    color: var(--clr-text);
    border-radius: 7px;
    font-size: .85rem;
}
.form-control:focus, .form-select:focus {
    background: #12141e;
    border-color: var(--clr-primary);
    color: var(--clr-text);
    box-shadow: 0 0 0 2px rgba(99,102,241,.25);
}
.form-control::placeholder { color: var(--clr-muted); }

/* ── Folder table ──────────────────────────── */
.folder-table {
    font-size: .82rem;
    border-collapse: separate;
    border-spacing: 0;
}
/* Kill Bootstrap's default light backgrounds */
.folder-table,
.folder-table > :not(caption) > * > * {
    background-color: transparent;
    color: var(--clr-text);
    border-bottom-color: var(--clr-border);
}
.folder-table thead tr {
    background: rgba(99,102,241,.10);
}
.folder-table th {
    font-size: .72rem;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--clr-primary);
    border-color: var(--clr-border) !important;
    padding: .4rem .6rem;
    position: sticky; top: 0; z-index: 1;
    background: #1c1f30;
    white-space: nowrap;
}
.folder-table td {
    border-color: rgba(45,48,72,.6) !important;
    padding: .35rem .6rem;
    vertical-align: middle;
}
/* Zebra rows */
.folder-table tbody tr:nth-child(odd) td  { background: rgba(255,255,255,.02); }
.folder-table tbody tr:nth-child(even) td { background: transparent; }
.folder-table tbody tr:hover td {
    background: rgba(99,102,241,.12) !important;
}
/* Folder ID column */
.folder-table .font-monospace {
    color: #7dd3fc;        /* sky-300 – stands out but not harsh */
    font-size: .78rem;
    letter-spacing: .02em;
}
/* File name column */
.folder-table .col-file { color: var(--clr-text); }
/* Page count */
.folder-table .col-pages { color: #a5f3fc; font-weight: 600; }
/* Badges */
.folder-table .badge.bg-success  { background: rgba(34,197,94,.18) !important; color: #4ade80; border: 1px solid rgba(34,197,94,.3); }
.folder-table .badge.bg-secondary { background: rgba(148,163,184,.12) !important; color: var(--clr-muted); border: 1px solid rgba(148,163,184,.25); }

/* ── Login page ────────────────────────────── */
.login-wrap {
    min-height: calc(100vh - 42px);
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(ellipse at top, #1a1d2e 0%, var(--clr-bg) 60%);
}
.login-card {
    width: 100%;
    max-width: 340px;
    background: var(--clr-surface);
    border: 1px solid var(--clr-border);
    border-radius: 14px;
    padding: 1.5rem;
}

/* ── Alert compact ─────────────────────────── */
.alert-sm { font-size: .82rem; }

/* ══════════════════════════════════════════════
   THUMBNAIL GALLERY
══════════════════════════════════════════════ */
.thumbnail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 12px;
}
.thumb-card {
    background: var(--clr-surface);
    border: 1px solid var(--clr-border);
    border-radius: 10px;
    overflow: hidden;
    cursor: pointer;
    transition: transform .18s, border-color .18s, box-shadow .18s;
}
.thumb-card:hover, .thumb-card:focus {
    transform: translateY(-3px) scale(1.02);
    border-color: var(--clr-primary);
    box-shadow: 0 6px 20px rgba(99,102,241,.22);
    outline: none;
}
.thumb-img-wrap {
    width: 100%;
    padding-bottom: 133%;
    position: relative;
    overflow: hidden;
    background: #12141e;
}
.thumb-img-wrap img {
    position: absolute; top: 0; left: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform .2s;
}
.thumb-card:hover .thumb-img-wrap img { transform: scale(1.04); }
.thumb-label {
    font-size: .72rem;
    font-weight: 600;
    color: var(--clr-muted);
    text-align: center;
    padding: 4px;
    letter-spacing: .04em;
}

/* ══════════════════════════════════════════════
   FULLSCREEN VIEWER  –  PDF-style (top-down)
══════════════════════════════════════════════ */
.viewer-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: #0a0c14;
    flex-direction: column;
    overflow: hidden;
}
.viewer-overlay.active { display: flex; }

/* Top bar */
.viewer-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 5px 12px;
    background: rgba(10,12,20,.97);
    border-bottom: 1px solid var(--clr-border);
    flex-shrink: 0;
    height: 42px;
}
.viewer-counter {
    font-size: .82rem;
    font-weight: 600;
    color: var(--clr-muted);
    letter-spacing: .04em;
}
.viewer-toolbox { display: flex; align-items: center; gap: 4px; }
.zoom-label {
    font-size: .78rem;
    font-weight: 700;
    color: var(--clr-text);
    min-width: 42px;
    text-align: center;
}
.vbtn {
    width: 30px; height: 30px;
    border: 1px solid var(--clr-border);
    background: var(--clr-surface);
    color: var(--clr-text);
    border-radius: 6px;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; font-size: .85rem;
    transition: background .15s, border-color .15s;
}
.vbtn:hover { background: var(--clr-border); border-color: var(--clr-primary); color: var(--clr-primary); }
.vbtn:disabled { opacity: .3; cursor: default; pointer-events: none; }

/* Body = sidebar + main */
.viewer-body {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Left sidebar */
.viewer-sidebar {
    width: 120px;
    flex-shrink: 0;
    overflow-y: auto;
    overflow-x: hidden;
    background: rgba(10,12,20,.92);
    border-right: 1px solid var(--clr-border);
    padding: 8px 6px;
}
.viewer-sidebar::-webkit-scrollbar { width: 3px; }
.viewer-sidebar::-webkit-scrollbar-thumb { background: var(--clr-border); border-radius: 2px; }

.sidebar-thumb {
    position: relative;
    border: 2px solid transparent;
    border-radius: 5px;
    overflow: hidden;
    margin-bottom: 7px;
    cursor: pointer;
    opacity: 0.55;
    transition: opacity .15s, border-color .15s, transform .12s;
}
.sidebar-thumb:hover          { opacity: .85; transform: scale(1.02); }
.sidebar-thumb.active         { border-color: var(--clr-primary); opacity: 1; }
.sidebar-thumb img            { width: 100%; height: auto; display: block; }
.sidebar-page-num {
    position: absolute;
    bottom: 2px; right: 3px;
    font-size: .6rem;
    font-weight: 700;
    color: rgba(255,255,255,.9);
    text-shadow: 0 1px 3px rgba(0,0,0,1);
    line-height: 1;
}

/* Main scrollable page area */
.viewer-main {
    flex: 1;
    overflow-y: auto;
    overflow-x: auto;
    background: #1c1f2e;
    padding: 20px 32px;
    cursor: grab;
}
.viewer-main.dragging { cursor: grabbing; }
.viewer-main::-webkit-scrollbar       { width: 8px; height: 8px; }
.viewer-main::-webkit-scrollbar-track { background: #12141e; }
.viewer-main::-webkit-scrollbar-thumb { background: #3a3d5c; border-radius: 4px; }
.viewer-main::-webkit-scrollbar-thumb:hover { background: var(--clr-primary); }

/* Individual page */
.page-container {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}
.page-img {
    display: block;
    height: auto;
    box-shadow: 0 6px 40px rgba(0,0,0,.7);
    background: #fff;
    user-select: none;
    -webkit-user-drag: none;
}

/* ── Scrollbar ─────────────────────────────── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--clr-bg); }
::-webkit-scrollbar-thumb { background: var(--clr-border); border-radius: 3px; }


:root {
    --clr-bg: #0f1117;
    --clr-surface: #1a1d27;
    --clr-border: #2d3048;
    --clr-primary: #6366f1;
    --clr-primary-hover: #4f52d9;
    --clr-success: #22c55e;
    --clr-text: #e2e8f0;
    --clr-muted: #94a3b8;
    --radius: 14px;
}

html, body {
    height: 100%;
    background: var(--clr-bg);
    color: var(--clr-text);
    font-family: 'Segoe UI', system-ui, sans-serif;
}

/* ── Navbar ────────────────────────────────── */
.navbar {
    border-bottom: 1px solid var(--clr-border);
    background: #0a0c14 !important;
}

/* ── Hero Section ──────────────────────────── */
.hero-section {
    min-height: calc(100vh - 60px);
    background: radial-gradient(ellipse at top, #1e2035 0%, #0f1117 60%);
}

.hero-icon {
    font-size: 5rem;
    filter: drop-shadow(0 0 24px rgba(239, 68, 68, 0.4));
}

/* ── Cards ─────────────────────────────────── */
.card {
    background: var(--clr-surface) !important;
    border: 1px solid var(--clr-border) !important;
    border-radius: var(--radius) !important;
    color: var(--clr-text);
}

/* ── Drop Zone ─────────────────────────────── */
.drop-zone {
    border: 2px dashed var(--clr-border);
    border-radius: var(--radius);
    padding: 3rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
    user-select: none;
}

.drop-zone:hover,
.drop-zone.dragover {
    border-color: var(--clr-primary);
    background: rgba(99, 102, 241, 0.06);
}

.drop-zone:focus {
    outline: 2px solid var(--clr-primary);
    outline-offset: 2px;
}

.drop-icon {
    font-size: 3.5rem;
    color: var(--clr-primary);
}

/* ── Buttons ───────────────────────────────── */
.btn-primary {
    background: var(--clr-primary);
    border-color: var(--clr-primary);
    border-radius: 10px;
    font-weight: 600;
    transition: background 0.2s, transform 0.1s;
}

.btn-primary:hover {
    background: var(--clr-primary-hover);
    border-color: var(--clr-primary-hover);
    transform: translateY(-1px);
}

.btn-success {
    background: var(--clr-success);
    border-color: var(--clr-success);
    border-radius: 10px;
    font-weight: 600;
}

.btn-outline-secondary {
    border-color: var(--clr-border);
    color: var(--clr-muted);
    border-radius: 8px;
}

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

/* ── Subtle alert ──────────────────────────── */
.bg-success-subtle {
    background: rgba(34, 197, 94, 0.08) !important;
}

.border-success-subtle {
    border-color: rgba(34, 197, 94, 0.25) !important;
}

/* ── Spinner ───────────────────────────────── */
@-webkit-keyframes spin { to { -webkit-transform: rotate(360deg); } }
@keyframes spin { to { transform: rotate(360deg); } }

.spin {
    display: inline-block;
    -webkit-animation: spin 1s linear infinite;
    animation: spin 1s linear infinite;
}

/* ── Footer ────────────────────────────────── */
.footer {
    background: #0a0c14 !important;
    border-top: 1px solid var(--clr-border);
}

/* ══════════════════════════════════════════════
   THUMBNAIL GALLERY
══════════════════════════════════════════════ */
.thumbnail-grid {
    display: -ms-grid;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 16px;
}

.thumb-card {
    background: var(--clr-surface);
    border: 1px solid var(--clr-border);
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    transition: -webkit-transform 0.18s, border-color 0.18s, -webkit-box-shadow 0.18s;
    transition: transform 0.18s, border-color 0.18s, box-shadow 0.18s;
}

.thumb-card:hover,
.thumb-card:focus {
    -webkit-transform: translateY(-4px) scale(1.02);
    transform: translateY(-4px) scale(1.02);
    border-color: var(--clr-primary);
    -webkit-box-shadow: 0 8px 24px rgba(99, 102, 241, 0.25);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.25);
    outline: none;
}

.thumb-img-wrap {
    width: 100%;
    padding-bottom: 133%; /* 3:4 aspect ratio */
    position: relative;
    overflow: hidden;
    background: #12141e;
}

.thumb-img-wrap img {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    transition: -webkit-transform 0.2s;
    transition: transform 0.2s;
}

.thumb-card:hover .thumb-img-wrap img {
    -webkit-transform: scale(1.04);
    transform: scale(1.04);
}

.thumb-label {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--clr-muted);
    text-align: center;
    padding: 6px 4px;
    letter-spacing: 0.04em;
}

/* ══════════════════════════════════════════════
   FULLSCREEN VIEWER
══════════════════════════════════════════════ */
.viewer-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    z-index: 9999;
    background: rgba(5, 6, 12, 0.97);
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    overflow: hidden;
}

.viewer-overlay.active {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
}

/* Top bar */
.viewer-topbar {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: justify;
    -ms-flex-pack: justify;
    justify-content: space-between;
    padding: 10px 16px;
    background: rgba(10, 12, 20, 0.9);
    border-bottom: 1px solid var(--clr-border);
    -ms-flex-negative: 0;
    flex-shrink: 0;
}

.viewer-counter {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--clr-muted);
    letter-spacing: 0.05em;
}

.viewer-toolbox {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    gap: 6px;
}

.vbtn {
    width: 36px;
    height: 36px;
    border: 1px solid var(--clr-border);
    background: var(--clr-surface);
    color: var(--clr-text);
    border-radius: 8px;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.15s, border-color 0.15s;
}

.vbtn:hover {
    background: var(--clr-border);
    border-color: var(--clr-primary);
    color: var(--clr-primary);
}

/* Stage */
.viewer-stage {
    -webkit-box-flex: 1;
    -ms-flex: 1;
    flex: 1;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    overflow: hidden;
    position: relative;
}

.viewer-img-container {
    -webkit-box-flex: 1;
    -ms-flex: 1;
    flex: 1;
    height: 100%;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

#viewerImg {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    -webkit-transform-origin: center center;
    transform-origin: center center;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    cursor: default;
}

#viewerImg.grabbing { cursor: -webkit-grabbing; cursor: grabbing !important; }
#viewerImg.grab     { cursor: -webkit-grab; cursor: grab; }

/* Nav arrows */
.vnav {
    position: absolute;
    top: 50%;
    -webkit-transform: translateY(-50%);
    transform: translateY(-50%);
    z-index: 10;
    width: 48px;
    height: 80px;
    background: rgba(10, 12, 20, 0.7);
    border: 1px solid var(--clr-border);
    color: var(--clr-text);
    font-size: 1.4rem;
    cursor: pointer;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    transition: background 0.15s, color 0.15s;
    border-radius: 8px;
}

.vnav.left  { left: 12px; }
.vnav.right { right: 12px; }

.vnav:hover {
    background: rgba(99, 102, 241, 0.3);
    color: #fff;
    border-color: var(--clr-primary);
}

.vnav:disabled {
    opacity: 0.25;
    cursor: default;
    pointer-events: none;
}

/* Filmstrip */
.viewer-filmstrip {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    gap: 6px;
    padding: 8px 12px;
    background: rgba(10, 12, 20, 0.9);
    border-top: 1px solid var(--clr-border);
    overflow-x: auto;
    -ms-flex-negative: 0;
    flex-shrink: 0;
    scroll-behavior: smooth;
}

.viewer-filmstrip::-webkit-scrollbar { height: 4px; }
.viewer-filmstrip::-webkit-scrollbar-track { background: transparent; }
.viewer-filmstrip::-webkit-scrollbar-thumb { background: var(--clr-border); border-radius: 2px; }

.film-thumb {
    height: 64px;
    width: auto;
    border-radius: 4px;
    cursor: pointer;
    border: 2px solid transparent;
    opacity: 0.55;
    transition: opacity 0.15s, border-color 0.15s, -webkit-transform 0.15s;
    transition: opacity 0.15s, border-color 0.15s, transform 0.15s;
    -ms-flex-negative: 0;
    flex-shrink: 0;
}

.film-thumb:hover  { opacity: 0.85; -webkit-transform: scale(1.05); transform: scale(1.05); }
.film-thumb.active { border-color: var(--clr-primary); opacity: 1; }

/* ── Scrollbar ─────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--clr-bg); }
::-webkit-scrollbar-thumb { background: var(--clr-border); border-radius: 3px; }