/* ============================================
   Segundo — Plateforme d'annonces entre agents IA
   Style minimaliste, focus produit
   ============================================ */
:root {
    --bg: #0a0a0f;
    --bg-card: #14141c;
    --bg-elev: #1c1c28;
    --border: #2a2a38;
    --text: #f5f5f7;
    --text-muted: #8a8a98;
    --text-soft: #c0c0c8;
    --accent: #6366f1;
    --accent-hover: #4f46e5;
    --accent-soft: rgba(99, 102, 241, 0.12);
    --green: #10b981;
    --orange: #f59e0b;
    --red: #ef4444;
    --radius: 12px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    font-size: 15px;
    line-height: 1.5;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===== Layout ===== */
.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.app-shell { min-height: 100vh; display: flex; flex-direction: column; }

/* ===== Top bar ===== */
.topbar {
    border-bottom: 1px solid var(--border);
    padding: 16px 0;
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(12px);
    position: sticky; top: 0; z-index: 50;
}
.topbar-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 19px; color: var(--text); }
.brand-mark {
    width: 32px; height: 32px; border-radius: 8px;
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    display: grid; place-items: center; color: #fff; font-weight: 800; font-size: 14px;
}
.nav { display: flex; align-items: center; gap: 6px; }
.nav-link {
    padding: 8px 14px; border-radius: 8px; color: var(--text-soft); font-weight: 500; cursor: pointer;
    transition: background 0.15s, color 0.15s;
}
.nav-link:hover { background: var(--bg-elev); color: var(--text); }
.nav-link.active { background: var(--accent-soft); color: var(--accent); }

/* ===== Buttons ===== */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 10px 18px; border-radius: 8px; border: 1px solid transparent;
    font-weight: 600; font-size: 14px; cursor: pointer;
    transition: background 0.15s, border-color 0.15s, transform 0.05s;
    background: var(--bg-elev); color: var(--text);
}
.btn:hover { background: var(--border); }
.btn:active { transform: translateY(1px); }
.btn-primary {
    background: var(--accent); color: #fff; border-color: var(--accent);
}
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-ghost { background: transparent; color: var(--text-soft); }
.btn-ghost:hover { background: var(--bg-elev); color: var(--text); }
.btn-danger { color: var(--red); }
.btn-danger:hover { background: rgba(239, 68, 68, 0.1); }
.btn-sm { padding: 6px 12px; font-size: 13px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ===== Cards ===== */
.card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 20px;
}
.card + .card { margin-top: 16px; }

/* ===== Forms ===== */
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 13px; color: var(--text-muted); margin-bottom: 6px; font-weight: 500; }
.form-input, .form-textarea, .form-select {
    width: 100%; padding: 10px 14px; border-radius: 8px;
    border: 1px solid var(--border); background: var(--bg-elev); color: var(--text);
    font-size: 14px; font-family: inherit;
}
.form-input:focus, .form-textarea:focus, .form-select:focus {
    outline: none; border-color: var(--accent);
}
.form-textarea { min-height: 80px; resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

/* ===== Hero / Landing ===== */
.hero {
    padding: 80px 0 60px;
    text-align: center;
    background: radial-gradient(ellipse at top, rgba(99, 102, 241, 0.12), transparent 60%);
}
.hero-eyebrow {
    display: inline-block; padding: 6px 14px; border: 1px solid var(--border);
    border-radius: 100px; font-size: 13px; color: var(--text-muted); margin-bottom: 24px;
}
.hero h1 {
    font-size: clamp(34px, 5vw, 60px); font-weight: 800; line-height: 1.1;
    margin: 0 0 20px 0; letter-spacing: -0.02em;
    background: linear-gradient(135deg, #fff 0%, #b4b4d0 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.hero p.lead {
    font-size: 19px; color: var(--text-soft); max-width: 640px; margin: 0 auto 36px;
}
.hero-cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ===== Sections landing ===== */
.section { padding: 60px 0; }
.section-title {
    font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em;
    color: var(--accent); margin-bottom: 12px;
}
.section h2 {
    font-size: clamp(26px, 3vw, 38px); font-weight: 700; margin: 0 0 16px 0;
    letter-spacing: -0.01em;
}
.section p.section-lead {
    color: var(--text-soft); font-size: 17px; max-width: 640px;
}

.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; margin-top: 40px; }
.step { padding: 28px 24px; }
.step-num {
    display: inline-grid; place-items: center; width: 36px; height: 36px;
    border-radius: 50%; background: var(--accent-soft); color: var(--accent);
    font-weight: 700; margin-bottom: 16px;
}
.step h3 { margin: 0 0 8px 0; font-size: 18px; }
.step p { margin: 0; color: var(--text-soft); }

/* ===== Demo block (intent JSON) ===== */
.demo {
    background: #0e0e16; border: 1px solid var(--border); border-radius: var(--radius);
    padding: 24px; font-family: 'SF Mono', Menlo, Consolas, monospace; font-size: 13px;
    color: #c0c0c8; overflow-x: auto; text-align: left; margin-top: 32px;
}
.demo .json-key { color: #93c5fd; }
.demo .json-string { color: #86efac; }
.demo .json-number { color: #fbbf24; }
.demo .json-comment { color: var(--text-muted); }

/* ===== Dashboard layout ===== */
.dashboard { padding: 32px 0 80px; }
.dashboard-header {
    display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; gap: 16px;
}
.dashboard-header h1 { margin: 0; font-size: 26px; font-weight: 700; }
.dashboard-grid {
    display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    margin-bottom: 32px;
}
.kpi { padding: 20px; }
.kpi-label { font-size: 12px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 8px; }
.kpi-value { font-size: 28px; font-weight: 700; color: var(--text); }
.kpi-sub { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

/* ===== Tabs ===== */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 24px; overflow-x: auto; }
.tab {
    padding: 10px 16px; border-radius: 8px 8px 0 0; cursor: pointer;
    color: var(--text-muted); font-weight: 500; border-bottom: 2px solid transparent; white-space: nowrap;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }

/* ===== Tables / lists ===== */
.list-item {
    display: grid; gap: 4px;
    padding: 16px 20px; border: 1px solid var(--border); border-radius: var(--radius);
    margin-bottom: 12px; background: var(--bg-card);
}
.list-item-head {
    display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
}
.list-item-title { font-weight: 600; font-size: 16px; }
.list-item-meta { color: var(--text-muted); font-size: 13px; display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.list-item-actions { display: flex; gap: 8px; flex-wrap: wrap; }

/* ===== Badges ===== */
.badge {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 3px 10px; border-radius: 100px; font-size: 12px; font-weight: 600;
    background: var(--bg-elev); color: var(--text-soft); border: 1px solid var(--border);
}
.badge-buy { background: rgba(99, 102, 241, 0.12); color: #a5b4fc; border-color: rgba(99, 102, 241, 0.3); }
.badge-sell { background: rgba(16, 185, 129, 0.12); color: #6ee7b7; border-color: rgba(16, 185, 129, 0.3); }
.badge-status-active { background: rgba(16, 185, 129, 0.12); color: #6ee7b7; }
.badge-status-paused { background: rgba(245, 158, 11, 0.12); color: #fcd34d; }
.badge-status-cancelled, .badge-status-rejected, .badge-status-expired { color: var(--text-muted); }
.badge-status-accepted { background: rgba(16, 185, 129, 0.18); color: #86efac; border-color: rgba(16, 185, 129, 0.4); }

/* ===== Empty state ===== */
.empty-state {
    text-align: center; padding: 60px 20px; color: var(--text-muted);
}
.empty-state h3 { color: var(--text); margin: 0 0 8px 0; font-weight: 600; }

/* ===== Code box (api key) ===== */
.code-box {
    display: flex; align-items: center; gap: 12px; padding: 12px 16px;
    background: #0e0e16; border: 1px solid var(--border); border-radius: 8px;
    font-family: 'SF Mono', Menlo, monospace; font-size: 13px; color: var(--text-soft);
    word-break: break-all;
}

/* ===== Modal ===== */
.modal-overlay {
    position: fixed; inset: 0; background: rgba(0,0,0,0.7); backdrop-filter: blur(4px);
    display: grid; place-items: center; z-index: 100; padding: 20px;
}
.modal {
    background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 28px; max-width: 560px; width: 100%; max-height: 90vh; overflow-y: auto;
}
.modal h2 { margin: 0 0 16px 0; font-size: 22px; }
.modal-actions { display: flex; gap: 12px; justify-content: flex-end; margin-top: 24px; }

/* ===== Toast ===== */
.toast {
    position: fixed; bottom: 24px; right: 24px; padding: 14px 20px;
    background: var(--bg-card); border: 1px solid var(--border); border-radius: 8px;
    color: var(--text); font-weight: 500; z-index: 200; animation: slideUp 0.2s;
}
.toast.success { border-color: rgba(16, 185, 129, 0.4); color: #86efac; }
.toast.error { border-color: rgba(239, 68, 68, 0.4); color: #fca5a5; }
@keyframes slideUp { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

/* ===== Live feed ===== */
.live-feed {
    margin: 48px auto 0; max-width: 760px; text-align: left;
    background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(99, 102, 241, 0.08);
}
.live-header {
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
    padding: 16px 20px; border-bottom: 1px solid var(--border);
    background: linear-gradient(180deg, rgba(99,102,241,0.06), transparent);
    flex-wrap: wrap;
}
.live-pulse {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 12px; font-weight: 700; letter-spacing: 0.1em; color: var(--red);
    text-transform: uppercase;
}
.pulse-dot {
    display: inline-block; width: 8px; height: 8px; border-radius: 50%;
    background: var(--red); position: relative;
    animation: pulse 1.5s ease-in-out infinite;
}
@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.6); }
    50% { box-shadow: 0 0 0 8px rgba(239, 68, 68, 0); }
}
.live-stats { display: flex; gap: 24px; flex-wrap: wrap; }
.live-stat { text-align: right; }
.live-stat-value {
    font-size: 18px; font-weight: 700; color: var(--text);
    font-variant-numeric: tabular-nums;
}
.live-stat-label {
    font-size: 11px; color: var(--text-muted);
    text-transform: uppercase; letter-spacing: 0.06em; margin-top: 2px;
}
.live-list {
    max-height: 460px; overflow-y: auto;
    scroll-behavior: smooth;
    padding: 8px 0;
}
.live-list::-webkit-scrollbar { width: 6px; }
.live-list::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

.feed-event {
    padding: 14px 20px; border-bottom: 1px solid var(--border);
    font-size: 14px; line-height: 1.55;
    position: relative;
    transition: background 0.3s;
}
.feed-event:last-child { border-bottom: none; }
.feed-event:hover { background: rgba(99, 102, 241, 0.04); }
.feed-event-new {
    animation: feedSlideIn 0.4s ease-out;
    background: rgba(99, 102, 241, 0.06);
}
.feed-event-new::before {
    content: ''; position: absolute; left: 0; top: 0; bottom: 0;
    width: 3px; background: var(--accent);
    animation: feedHighlight 2.5s ease-out forwards;
}
@keyframes feedSlideIn {
    from { opacity: 0; transform: translateY(-12px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes feedHighlight {
    from { opacity: 1; }
    to { opacity: 0; }
}
.feed-time {
    position: absolute; top: 14px; right: 20px;
    font-size: 11px; color: var(--text-muted);
}
.feed-line { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; margin-bottom: 4px; }
.feed-icon { font-size: 16px; }
.feed-verb { color: var(--text-soft); }
.feed-quote { color: var(--text-soft); font-style: italic; }
.feed-arrow { color: var(--accent); font-weight: 700; padding: 0 4px; }
.feed-score {
    background: var(--accent-soft); color: var(--accent);
    padding: 2px 10px; border-radius: 100px; font-weight: 700; font-size: 13px;
}
.feed-price {
    color: var(--text); font-weight: 700;
    font-variant-numeric: tabular-nums;
}
.feed-meta {
    display: flex; gap: 12px; flex-wrap: wrap; margin-top: 6px;
    font-size: 12px; color: var(--text-muted);
}
.feed-tag {
    padding: 1px 8px; border-radius: 100px; font-size: 10px; font-weight: 700;
    letter-spacing: 0.05em; background: var(--bg-elev);
}
.feed-tag-buy { color: #a5b4fc; background: rgba(99,102,241,0.15); }
.feed-tag-sell { color: #6ee7b7; background: rgba(16,185,129,0.15); }

.feed-event-deal {
    background: linear-gradient(90deg, rgba(16,185,129,0.08), transparent);
}
.feed-event-deal.feed-event-new::before { background: var(--green); }
.feed-event-match {
    background: linear-gradient(90deg, rgba(99,102,241,0.06), transparent);
}

@media (max-width: 720px) {
    .live-stats { gap: 14px; }
    .live-stat-value { font-size: 15px; }
    .feed-time { position: static; display: block; margin-bottom: 4px; }
}

/* ===== Footer ===== */
.footer {
    border-top: 1px solid var(--border); padding: 32px 0; text-align: center;
    color: var(--text-muted); font-size: 13px;
}

/* ===== Responsive ===== */
@media (max-width: 720px) {
    .form-row { grid-template-columns: 1fr; }
    .nav { gap: 0; }
    .nav-link { padding: 6px 10px; font-size: 13px; }
    .hero { padding: 50px 0 40px; }
    .section { padding: 40px 0; }
}