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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #0f172a;
    color: #e2e8f0;
    font-size: 14px;
    line-height: 1.5;
    min-height: 100vh;
}

/* ── Login ──────────────────────────────────────────────── */
.login-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: #0f172a; }

.login-card {
    background: #1e293b;
    border: 1px solid #334155;
    border-radius: 14px;
    padding: 44px;
    width: 360px;
    box-shadow: 0 24px 64px rgba(0,0,0,.4);
}

.login-logo { text-align: center; margin-bottom: 36px; }
.logo-brand { display: block; font-size: 24px; font-weight: 800; color: #f8fafc; letter-spacing: -1px; }
.logo-sub   { display: block; font-size: 13px; color: #64748b; margin-top: 4px; }

/* ── Forms ──────────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-group label {
    display: block; font-size: 11px; font-weight: 700; text-transform: uppercase;
    letter-spacing: .6px; color: #94a3b8; margin-bottom: 6px;
}
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%; padding: 10px 13px; border: 1px solid #334155; border-radius: 8px;
    font-size: 14px; color: #f1f5f9; background: #0f172a; outline: none;
    transition: border-color .15s, box-shadow .15s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: #6366f1; box-shadow: 0 0 0 3px rgba(99,102,241,.15); }
.form-group select option { background: #1e293b; }
.form-group textarea { resize: vertical; min-height: 100px; }

.form-row   { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; }

/* ── Buttons ────────────────────────────────────────────── */
.btn {
    display: inline-flex; align-items: center; gap: 6px; padding: 9px 18px;
    border-radius: 8px; font-size: 13px; font-weight: 600; cursor: pointer;
    border: none; transition: all .12s; text-decoration: none; white-space: nowrap;
}
.btn:disabled { opacity: .4; cursor: not-allowed; }

.btn-primary { background: #6366f1; color: #fff; }
.btn-primary:hover:not(:disabled) { background: #4f46e5; }

.btn-success { background: #22c55e; color: #fff; }
.btn-success:hover:not(:disabled) { background: #16a34a; }

.btn-danger  { background: #ef4444; color: #fff; }
.btn-danger:hover:not(:disabled)  { background: #dc2626; }

.btn-ghost {
    background: transparent; color: #94a3b8; border: 1px solid #334155;
}
.btn-ghost:hover:not(:disabled) { background: #1e293b; border-color: #475569; color: #e2e8f0; }

.btn-sm  { padding: 6px 12px; font-size: 12px; border-radius: 6px; }
.btn-full { width: 100%; justify-content: center; }

/* ── Alerts ─────────────────────────────────────────────── */
.alert { padding: 10px 14px; border-radius: 8px; font-size: 13px; margin-bottom: 14px; }
.alert-error   { background: rgba(239,68,68,.12); color: #fca5a5; border: 1px solid rgba(239,68,68,.3); }
.alert-success { background: rgba(34,197,94,.12); color: #86efac; border: 1px solid rgba(34,197,94,.3); }

/* ── Header ─────────────────────────────────────────────── */
.app-header {
    background: #1e293b; border-bottom: 1px solid #334155;
    padding: 0 24px; display: flex; align-items: center; height: 56px;
    position: sticky; top: 0; z-index: 100; gap: 16px;
}
.header-logo { font-weight: 800; font-size: 16px; letter-spacing: -0.5px; color: #f8fafc; flex-shrink: 0; }
.header-logo span { color: #6366f1; }
.header-nav  { display: flex; gap: 2px; flex: 1; }
.nav-btn {
    padding: 6px 14px; border-radius: 6px; font-size: 13px; font-weight: 500;
    color: #64748b; background: transparent; border: none; cursor: pointer; transition: all .12s;
}
.nav-btn:hover  { color: #e2e8f0; background: rgba(255,255,255,.06); }
.nav-btn.active { color: #f8fafc; background: rgba(99,102,241,.2); }
.header-right { flex-shrink: 0; }

/* ── Layout ─────────────────────────────────────────────── */
.app-main { padding: 28px; max-width: 1100px; margin: 0 auto; }
.view { display: none; }
.view.active { display: block; }
.page-title { font-size: 20px; font-weight: 700; color: #f8fafc; letter-spacing: -.5px; margin-bottom: 24px; }
.page-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; }

/* ── Compose grid ───────────────────────────────────────── */
.compose-grid {
    display: grid;
    grid-template-columns: 360px 1fr;
    gap: 20px;
    align-items: start;
}

/* ── Upload zone ────────────────────────────────────────── */
.upload-zone {
    background: #1e293b;
    border: 2px dashed #334155;
    border-radius: 12px;
    aspect-ratio: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all .15s;
    overflow: hidden;
    position: relative;
}
.upload-zone:hover { border-color: #6366f1; background: #1e293b; }
.upload-zone.drag-over { border-color: #6366f1; background: rgba(99,102,241,.1); }
.upload-zone.has-image { border-style: solid; border-color: #334155; }

.upload-zone img {
    width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0;
}
.upload-overlay {
    position: absolute; inset: 0; background: rgba(0,0,0,.5);
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    opacity: 0; transition: opacity .15s;
}
.upload-zone.has-image:hover .upload-overlay { opacity: 1; }
.upload-icon { font-size: 40px; margin-bottom: 10px; opacity: .4; }
.upload-text { font-size: 13px; color: #64748b; text-align: center; }
.upload-text strong { color: #94a3b8; display: block; margin-bottom: 4px; }
.upload-actions { margin-top: 12px; display: flex; gap: 8px; }

/* ── Caption + send panel ───────────────────────────────── */
.send-panel {
    background: #1e293b;
    border: 1px solid #334155;
    border-radius: 12px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.caption-area {
    background: #0f172a;
    border: 1px solid #334155;
    border-radius: 8px;
    padding: 12px 14px;
    font-size: 14px;
    color: #e2e8f0;
    min-height: 140px;
    resize: vertical;
    width: 100%;
    outline: none;
    font-family: inherit;
    line-height: 1.6;
    transition: border-color .15s;
}
.caption-area:focus { border-color: #6366f1; }
.caption-footer { display: flex; justify-content: flex-end; font-size: 12px; color: #475569; margin-top: -10px; }
.caption-footer.warn { color: #f59e0b; }

/* ── Platform selector ──────────────────────────────────── */
.platforms-label { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .6px; color: #64748b; margin-bottom: 10px; }
.platform-grid { display: flex; flex-direction: column; gap: 6px; }

.platform-row {
    display: flex; align-items: center; gap: 10px; padding: 10px 12px;
    border: 1px solid #334155; border-radius: 8px; cursor: pointer;
    transition: all .12s; user-select: none;
}
.platform-row:hover { border-color: #475569; background: rgba(255,255,255,.03); }
.platform-row.selected { border-color: #6366f1; background: rgba(99,102,241,.08); }
.platform-row.disabled { opacity: .35; cursor: not-allowed; }
.platform-row input[type=checkbox] { display: none; }

.platform-icon  { font-size: 20px; flex-shrink: 0; }
.platform-info  { flex: 1; }
.platform-name  { font-size: 13px; font-weight: 600; color: #e2e8f0; }
.platform-hint  { font-size: 11px; color: #64748b; }
.platform-badge { font-size: 10px; font-weight: 700; padding: 2px 7px; border-radius: 100px; flex-shrink: 0; }
.badge-ok  { background: rgba(34,197,94,.15); color: #86efac; }
.badge-cfg { background: rgba(239,68,68,.12); color: #fca5a5; }

.post-btn {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: #fff; font-size: 15px; font-weight: 700; padding: 14px;
    border-radius: 10px; border: none; cursor: pointer;
    transition: all .15s; width: 100%; letter-spacing: .3px;
}
.post-btn:hover:not(:disabled) { opacity: .9; transform: translateY(-1px); box-shadow: 0 8px 24px rgba(99,102,241,.3); }
.post-btn:disabled { opacity: .4; cursor: not-allowed; transform: none; box-shadow: none; }

/* ── Results ─────────────────────────────────────────────── */
.results-panel {
    background: #1e293b; border: 1px solid #334155; border-radius: 12px;
    padding: 20px; margin-top: 20px;
}
.results-title { font-size: 14px; font-weight: 700; color: #f8fafc; margin-bottom: 14px; }
.result-row {
    display: flex; align-items: flex-start; gap: 10px;
    padding: 10px 0; border-bottom: 1px solid #1e293b; font-size: 13px;
}
.result-row:last-child { border-bottom: none; }
.result-icon  { font-size: 18px; flex-shrink: 0; }
.result-name  { font-weight: 600; color: #f1f5f9; }
.result-ok    { color: #86efac; font-size: 12px; }
.result-err   { color: #fca5a5; font-size: 12px; margin-top: 2px; }
.result-url a { color: #818cf8; font-size: 12px; }
.result-note  { color: #94a3b8; font-size: 12px; }

/* ── Settings ─────────────────────────────────────────────── */
.settings-section {
    background: #1e293b; border: 1px solid #334155; border-radius: 12px;
    margin-bottom: 16px; overflow: hidden;
}
.settings-header {
    display: flex; align-items: center; gap: 12px;
    padding: 16px 20px; cursor: pointer; user-select: none;
    transition: background .12s;
}
.settings-header:hover { background: rgba(255,255,255,.03); }
.settings-icon  { font-size: 22px; }
.settings-name  { font-weight: 700; color: #f1f5f9; flex: 1; }
.settings-status { font-size: 12px; font-weight: 600; }
.settings-status.ok  { color: #86efac; }
.settings-status.cfg { color: #f59e0b; }
.settings-status.off { color: #475569; }
.settings-chevron { color: #475569; font-size: 12px; transition: transform .2s; }
.settings-chevron.open { transform: rotate(90deg); }

.settings-body { padding: 0 20px 20px; border-top: 1px solid #0f172a; display: none; }
.settings-body.open { display: block; padding-top: 20px; }

.toggle-row { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.toggle-label { font-size: 13px; font-weight: 600; color: #cbd5e1; }
.toggle { position: relative; width: 42px; height: 24px; }
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
    position: absolute; inset: 0; background: #334155; border-radius: 100px;
    cursor: pointer; transition: background .15s;
}
.toggle-slider::before {
    content: ''; position: absolute; width: 18px; height: 18px;
    left: 3px; top: 3px; background: #fff; border-radius: 50%;
    transition: transform .15s;
}
.toggle input:checked + .toggle-slider { background: #6366f1; }
.toggle input:checked + .toggle-slider::before { transform: translateX(18px); }

/* ── History ─────────────────────────────────────────────── */
.history-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 16px; }
.history-card {
    background: #1e293b; border: 1px solid #334155; border-radius: 12px; overflow: hidden;
}
.history-img { width: 100%; aspect-ratio: 1; object-fit: cover; background: #0f172a; display: block; }
.history-img-placeholder { width: 100%; aspect-ratio: 1; background: #0f172a; display: flex; align-items: center; justify-content: center; color: #334155; font-size: 32px; }
.history-body { padding: 14px; }
.history-caption { font-size: 13px; color: #cbd5e1; margin-bottom: 10px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.history-date { font-size: 11px; color: #475569; margin-bottom: 10px; }
.history-pills { display: flex; flex-wrap: wrap; gap: 5px; }
.history-pill {
    font-size: 11px; font-weight: 600; padding: 2px 8px;
    border-radius: 100px; display: flex; align-items: center; gap: 4px;
}
.pill-ok  { background: rgba(34,197,94,.15); color: #86efac; }
.pill-err { background: rgba(239,68,68,.12); color: #fca5a5; }

/* ── Empty / Loading ─────────────────────────────────────── */
.empty-state { text-align: center; padding: 64px 24px; color: #475569; }
.empty-icon  { font-size: 48px; margin-bottom: 12px; opacity: .4; }
.loading { text-align: center; padding: 48px; color: #475569; font-size: 13px; }

/* ── Toast ───────────────────────────────────────────────── */
.toast {
    position: fixed; bottom: 24px; right: 24px;
    background: #1e293b; border: 1px solid #334155;
    color: #f1f5f9; padding: 12px 20px; border-radius: 10px; font-size: 13px; font-weight: 500;
    opacity: 0; transform: translateY(8px); transition: all .2s; z-index: 9999; pointer-events: none;
    box-shadow: 0 8px 32px rgba(0,0,0,.3);
}
.toast.show { opacity: 1; transform: translateY(0); }
.toast.error   { background: #7f1d1d; border-color: #991b1b; color: #fca5a5; }
.toast.success { background: #14532d; border-color: #166534; color: #86efac; }

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 800px) {
    .compose-grid { grid-template-columns: 1fr; }
    .upload-zone { aspect-ratio: 4/3; max-height: 300px; }
    .history-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 500px) {
    .app-main { padding: 16px; }
    .history-grid { grid-template-columns: 1fr; }
    .nav-btn { padding: 5px 8px; font-size: 12px; }
}