/* ── Vault · One-Time Secret Sharing ────────────────────────────── */
/* Design: dark minimal, monospaced accents, amber highlight         */

:root {
    --bg:           #0c0c0d;
    --surface:      #141416;
    --surface-2:    #1c1c1f;
    --border:       #2a2a2e;
    --border-light: #333338;
    --text:         #e8e8ec;
    --text-2:       #8e8e96;
    --text-3:       #55555c;
    --accent:       #f0a500;
    --accent-dim:   rgba(240,165,0,.12);
    --accent-glow:  rgba(240,165,0,.05);
    --danger:       #e05252;
    --danger-dim:   rgba(224,82,82,.12);
    --success:      #4caf82;
    --success-dim:  rgba(76,175,130,.12);
    --warn:         #e0a940;
    --warn-dim:     rgba(224,169,64,.12);
    --font-body:    'Syne', sans-serif;
    --font-mono:    'DM Mono', monospace;
    --radius:       10px;
    --radius-sm:    6px;
    --shadow:       0 2px 24px rgba(0,0,0,.45);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; scroll-behavior: smooth; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    -webkit-font-smoothing: antialiased;
}

/* ── Noise texture ─────────────────────────────────────────────── */
.noise-overlay {
    position: fixed; inset: 0; pointer-events: none; z-index: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
    opacity: .4;
}

/* ── Header ────────────────────────────────────────────────────── */
.site-header {
    width: 100%; max-width: 680px;
    display: flex; align-items: center; justify-content: space-between;
    padding: 28px 24px;
    position: relative; z-index: 10;
}

.logo {
    display: flex; align-items: center; gap: 10px;
    text-decoration: none; color: var(--text);
}

.logo-icon {
    width: 34px; height: 34px;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center;
    color: var(--accent);
}

.logo-text {
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: .04em;
    font-family: var(--font-mono);
}

.site-nav { display: flex; align-items: center; gap: 4px; }

.nav-link {
    padding: 7px 12px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--text-2);
    font-size: .82rem;
    font-weight: 500;
    letter-spacing: .02em;
    transition: color .15s, background .15s;
}

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

/* ── Main content ──────────────────────────────────────────────── */
.site-main {
    width: 100%; max-width: 680px;
    padding: 0 24px 80px;
    flex: 1;
    position: relative; z-index: 1;
}

/* ── Hero ──────────────────────────────────────────────────────── */
.page-hero {
    text-align: center;
    padding: 48px 0 44px;
}

.page-hero-sm { padding: 32px 0 28px; }

.hero-title {
    font-size: clamp(2.4rem, 6vw, 3.4rem);
    font-weight: 800;
    line-height: 1.08;
    letter-spacing: -.03em;
    margin-bottom: 16px;
}

.hero-title em {
    font-style: italic;
    color: var(--accent);
}

.hero-title-sm {
    font-size: clamp(1.7rem, 4vw, 2.2rem);
    margin-bottom: 10px;
}

.hero-sub {
    font-size: .95rem;
    color: var(--text-2);
    line-height: 1.6;
    max-width: 460px;
    margin: 0 auto;
}

/* ── Card ──────────────────────────────────────────────────────── */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    box-shadow: var(--shadow);
}

/* ── Tabs ──────────────────────────────────────────────────────── */
.tab-bar {
    display: flex;
    gap: 4px;
    margin-bottom: 24px;
    background: var(--surface-2);
    padding: 4px;
    border-radius: var(--radius-sm);
    width: fit-content;
}

.tab {
    display: flex; align-items: center; gap: 7px;
    padding: 7px 16px;
    border: none;
    border-radius: 5px;
    background: transparent;
    color: var(--text-2);
    font-family: var(--font-body);
    font-size: .84rem;
    font-weight: 600;
    cursor: pointer;
    transition: all .15s;
}

.tab:hover { color: var(--text); }

.tab.active {
    background: var(--surface);
    color: var(--text);
    box-shadow: 0 1px 4px rgba(0,0,0,.3);
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ── Fields ────────────────────────────────────────────────────── */
.field { display: flex; flex-direction: column; gap: 7px; flex: 1; }
.field-sm { flex: 0 0 130px; }

.field-row {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    flex-wrap: wrap;
}

.field-label {
    font-size: .78rem;
    font-weight: 600;
    color: var(--text-2);
    letter-spacing: .06em;
    text-transform: uppercase;
}

.field-optional {
    font-weight: 400;
    opacity: .6;
    text-transform: none;
    letter-spacing: 0;
}

.field-textarea, .field-input, .field-select {
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-family: var(--font-mono);
    font-size: .88rem;
    padding: 11px 13px;
    transition: border-color .15s, box-shadow .15s;
    width: 100%;
    outline: none;
}

.field-textarea {
    resize: vertical;
    min-height: 150px;
    font-family: var(--font-mono);
    line-height: 1.6;
}

.field-textarea:focus, .field-input:focus, .field-select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-dim);
}

.field-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%238e8e96' stroke-width='1.3' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    cursor: pointer;
}

.field-error { font-size: .82rem; color: var(--danger); }

.input-error { border-color: var(--danger) !important; }

.field + .field-row, .field-row + .btn { margin-top: 20px; }
.field + .btn { margin-top: 20px; }

/* ── Drop zone ─────────────────────────────────────────────────── */
.drop-zone {
    position: relative;
    border: 1.5px dashed var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface-2);
    min-height: 120px;
    cursor: pointer;
    transition: border-color .15s, background .15s;
    display: flex; align-items: center; justify-content: center;
}

.drop-zone:hover, .drop-zone.dragging {
    border-color: var(--accent);
    background: var(--accent-glow);
}

.drop-input {
    position: absolute; inset: 0;
    opacity: 0; cursor: pointer;
    width: 100%; height: 100%;
}

.drop-content {
    display: flex; flex-direction: column;
    align-items: center; gap: 8px;
    pointer-events: none;
    color: var(--text-3);
    padding: 24px;
}

.drop-label {
    font-size: .9rem;
    color: var(--text-2);
}

.drop-label u { color: var(--accent); text-decoration-color: var(--accent); }

.drop-sub { font-size: .78rem; color: var(--text-3); }

.drop-selected {
    display: flex; align-items: center; gap: 12px;
    padding: 16px 20px;
    color: var(--text);
    font-size: .9rem;
    font-family: var(--font-mono);
    pointer-events: none;
}

.drop-clear {
    pointer-events: all;
    background: none; border: none;
    color: var(--text-3); cursor: pointer;
    font-size: .9rem; line-height: 1;
    transition: color .15s;
    margin-left: auto;
}

.drop-clear:hover { color: var(--danger); }

/* ── Buttons ───────────────────────────────────────────────────── */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 10px 18px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface-2);
    color: var(--text);
    font-family: var(--font-body);
    font-size: .88rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all .15s;
    white-space: nowrap;
}

.btn:hover { border-color: var(--border-light); background: var(--surface); }

.btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #0c0c0d;
}

.btn-primary:hover {
    background: #f5b320;
    border-color: #f5b320;
}

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

.btn-danger:hover {
    background: var(--danger-dim);
}

.btn-ghost {
    background: transparent;
    border-color: transparent;
    color: var(--text-2);
}

.btn-ghost:hover {
    background: var(--surface-2);
    border-color: var(--border);
    color: var(--text);
}

.btn-copy {
    background: var(--surface-2);
    border-color: var(--border);
    color: var(--text-2);
    font-size: .8rem;
    padding: 7px 12px;
    white-space: nowrap;
    flex-shrink: 0;
}

.btn-copy:hover, .btn-copy.copied {
    border-color: var(--success);
    color: var(--success);
    background: var(--success-dim);
}

.btn-lg { padding: 13px 22px; font-size: .92rem; }
.btn-sm { padding: 7px 13px; font-size: .82rem; }
.btn-block { width: 100%; justify-content: center; }

/* ── Features strip ────────────────────────────────────────────── */
.feature-strip {
    display: flex; flex-wrap: wrap; gap: 8px;
    justify-content: center;
    padding: 24px 0 0;
}

.feature {
    display: flex; align-items: center; gap: 7px;
    padding: 8px 14px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: .8rem;
    color: var(--text-2);
    font-weight: 500;
}

/* ── Result card ───────────────────────────────────────────────── */
.result-card { display: flex; flex-direction: column; gap: 20px; }

.result-section { display: flex; flex-direction: column; gap: 8px; }

.link-box {
    display: flex; align-items: center;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.link-text {
    flex: 1;
    padding: 11px 14px;
    font-family: var(--font-mono);
    font-size: .8rem;
    color: var(--accent);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    word-break: break-all;
}

.link-hint {
    font-size: .78rem;
    color: var(--text-3);
    line-height: 1.5;
}

.result-meta {
    display: flex; gap: 24px; flex-wrap: wrap;
    padding: 14px 16px;
    background: var(--surface-2);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.meta-item { display: flex; flex-direction: column; gap: 3px; }
.meta-label { font-size: .72rem; color: var(--text-3); font-weight: 600; text-transform: uppercase; letter-spacing: .06em; }
.meta-value { font-size: .84rem; color: var(--text); }
.mono { font-family: var(--font-mono); }

.result-warning {
    display: flex; align-items: flex-start; gap: 9px;
    padding: 12px 14px;
    background: var(--warn-dim);
    border: 1px solid rgba(224,169,64,.2);
    border-radius: var(--radius-sm);
    font-size: .82rem;
    color: var(--warn);
    line-height: 1.5;
}

.result-actions {
    display: flex; justify-content: center;
    padding-top: 20px;
}

/* ── Success badge ─────────────────────────────────────────────── */
.success-badge {
    display: inline-flex; align-items: center; gap: 7px;
    padding: 6px 14px;
    background: var(--success-dim);
    border: 1px solid rgba(76,175,130,.2);
    border-radius: 20px;
    font-size: .78rem;
    font-weight: 600;
    color: var(--success);
    margin-bottom: 16px;
    letter-spacing: .04em;
}

/* ── Status icons ──────────────────────────────────────────────── */
.status-icon {
    width: 52px; height: 52px;
    border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 16px;
    border: 1px solid;
}

.status-icon-success { background: var(--success-dim); border-color: rgba(76,175,130,.2); color: var(--success); }
.status-icon-error   { background: var(--danger-dim);  border-color: rgba(224,82,82,.2);   color: var(--danger); }
.status-icon-warn    { background: var(--warn-dim);    border-color: rgba(224,169,64,.2);  color: var(--warn); }
.status-icon-lock    { background: var(--accent-dim);  border-color: rgba(240,165,0,.2);   color: var(--accent); }

/* ── View card ─────────────────────────────────────────────────── */
.view-card { display: flex; flex-direction: column; gap: 18px; }

.view-warning {
    display: flex; align-items: flex-start; gap: 8px;
    font-size: .82rem;
    color: var(--text-2);
    line-height: 1.5;
    padding: 10px 13px;
    background: var(--surface-2);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

/* ── Reveal card ───────────────────────────────────────────────── */
.destroyed-note {
    display: flex; align-items: center; justify-content: center; gap: 7px;
    color: var(--danger);
}

.reveal-card { }

.reveal-section { display: flex; flex-direction: column; gap: 10px; }

.reveal-content {
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 16px;
    font-family: var(--font-mono);
    font-size: .88rem;
    line-height: 1.7;
    color: var(--text);
    white-space: pre-wrap;
    word-break: break-word;
    max-height: 400px;
    overflow-y: auto;
}

.reveal-actions {
    display: flex;
    gap: 8px;
}

/* ── File reveal ───────────────────────────────────────────────── */
.file-reveal {
    display: flex; align-items: center; gap: 14px;
    padding: 16px;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    margin-bottom: 14px;
}

.file-icon { color: var(--accent); flex-shrink: 0; }

.file-details { display: flex; flex-direction: column; gap: 4px; }
.file-name { font-family: var(--font-mono); font-size: .88rem; color: var(--text); }
.file-type { font-size: .75rem; color: var(--text-3); }

/* ── Stats ─────────────────────────────────────────────────────── */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-bottom: 28px;
}

.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px 20px;
    display: flex; flex-direction: column; gap: 6px;
}

.stat-card-active {
    border-color: rgba(240,165,0,.3);
    background: var(--accent-glow);
}

.stat-value {
    font-family: var(--font-mono);
    font-size: 2.4rem;
    font-weight: 500;
    color: var(--text);
    line-height: 1;
}

.stat-card-active .stat-value { color: var(--accent); }

.stat-label {
    font-size: .8rem;
    color: var(--text-2);
}

/* ── About ─────────────────────────────────────────────────────── */
.about-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-bottom: 20px;
}

.about-step {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px 20px;
}

.step-num {
    font-family: var(--font-mono);
    font-size: .75rem;
    color: var(--accent);
    font-weight: 500;
    letter-spacing: .1em;
    margin-bottom: 10px;
}

.step-title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.3;
}

.step-body {
    font-size: .85rem;
    color: var(--text-2);
    line-height: 1.6;
}

.about-security {
    margin-bottom: 28px;
}

.security-title {
    font-size: .9rem;
    font-weight: 700;
    margin-bottom: 14px;
    color: var(--text-2);
    text-transform: uppercase;
    letter-spacing: .06em;
    font-size: .75rem;
}

.security-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.security-list li {
    font-size: .88rem;
    color: var(--text-2);
    line-height: 1.5;
    padding-left: 18px;
    position: relative;
}

.security-list li::before {
    content: '→';
    position: absolute; left: 0;
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: .82rem;
}

.security-list strong { color: var(--text); }

/* ── Footer ────────────────────────────────────────────────────── */
.site-footer {
    width: 100%; max-width: 680px;
    padding: 20px 24px 32px;
    display: flex; align-items: center; justify-content: center;
    gap: 12px;
    font-size: .78rem;
    color: var(--text-3);
    position: relative; z-index: 1;
}

.footer-link {
    color: var(--text-3);
    text-decoration: none;
    transition: color .15s;
}

.footer-link:hover { color: var(--text-2); }
.footer-sep { opacity: .4; }

/* ── Utilities ─────────────────────────────────────────────────── */
.mt-6 { margin-top: 24px; }

/* ── Responsive ─────────────────────────────────────────────────── */
@media (max-width: 520px) {
    .site-header { padding: 20px 16px; }
    .site-main { padding: 0 16px 60px; }
    .card { padding: 20px 16px; }
    .field-row { flex-direction: column; }
    .field-sm { flex: 1; }
    .about-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr; }
    .hero-title { font-size: 2rem; }
    .site-footer { flex-wrap: wrap; justify-content: center; gap: 6px; }
}