/* ──────────────────────────────────────────────
   Delphi Theme System — CSS Custom Properties
   Dark (default) + Light mode
   ────────────────────────────────────────────── */

:root {
    /* Core backgrounds */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #0f172a;
    --bg-elevated: #263548;

    /* Text */
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-tertiary: #64748b;
    --text-body: #cbd5e1;

    /* Borders */
    --border: #334155;
    --border-hover: #475569;

    /* Accent */
    --accent: #3b82f6;
    --accent-strong: #2563eb;
    --accent-hover: #1d4ed8;
    --accent-dim: #1e3a5f;

    /* Inputs / Controls */
    --input-bg: #0f172a;
    --input-border: #334155;
    --input-focus: #3b82f6;

    /* Status backgrounds */
    --bg-danger: #7f1d1d;
    --bg-warning: #78350f;
    --bg-success: #14532d;
    --bg-info: #1e3a5f;
    --bg-purple: #312e81;
    --bg-premium: #2e1065;

    /* Status text */
    --text-danger: #fca5a5;
    --text-warning: #fde68a;
    --text-success: #86efac;
    --text-info: #93c5fd;
    --text-purple: #c4b5fd;

    /* Semantic solid */
    --red: #dc2626;
    --amber: #f59e0b;
    --green: #22c55e;
    --blue: #3b82f6;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.3);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.3);

    /* Misc */
    --radius: 8px;
    --radius-sm: 6px;
    --radius-xs: 4px;
    --header-height: 54px;
}

/* ── Light Mode ────────────────────────────────── */
[data-theme="light"] {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;
    --bg-elevated: #e2e8f0;

    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #94a3b8;
    --text-body: #334155;

    --border: #e2e8f0;
    --border-hover: #cbd5e1;

    --accent: #2563eb;
    --accent-strong: #1d4ed8;
    --accent-hover: #1e40af;
    --accent-dim: #dbeafe;

    --input-bg: #ffffff;
    --input-border: #d1d5db;
    --input-focus: #2563eb;

    --bg-danger: #fef2f2;
    --bg-warning: #fffbeb;
    --bg-success: #f0fdf4;
    --bg-info: #eff6ff;
    --bg-purple: #f5f3ff;
    --bg-premium: #faf5ff;

    --text-danger: #dc2626;
    --text-warning: #d97706;
    --text-success: #16a34a;
    --text-info: #2563eb;
    --text-purple: #7c3aed;

    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
}

/* ── Global Reset & Base ────────────────────────── */
* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: system-ui, -apple-system, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    transition: background 0.25s ease, color 0.25s ease;
}

/* Smooth transitions on all themed elements */
.header, .section, .stat-card, .alert-card, .engagement-card,
.question-card, .report-card, .template-card, .customer-row,
.btn, .action-btn, input, textarea, select, .nav a {
    transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

/* Light mode card refinements */
[data-theme="light"] .section { box-shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04); border: 1px solid var(--border); }
[data-theme="light"] .stat-card { box-shadow: 0 1px 3px rgba(0,0,0,0.06); border: 1px solid var(--border); }
[data-theme="light"] .alert-card, [data-theme="light"] .engagement-card,
[data-theme="light"] .question-card, [data-theme="light"] .report-card,
[data-theme="light"] .template-card { border: 1px solid var(--border); }
[data-theme="light"] a { color: var(--accent); }
[data-theme="light"] .ac-tier.YELLOW { color: #92400e; }

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

/* ── Header ────────────────────────────────────── */
.header {
    background: var(--bg-secondary);
    padding: 14px 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}
.header h1 { font-size: 17px; }
.header h1 span { color: var(--accent); }
.header-right { display: flex; align-items: center; gap: 16px; font-size: 13px; }
.header-right a { color: var(--text-secondary); }
.header-right a:hover { color: var(--text-primary); text-decoration: none; }

/* ── Theme Toggle ──────────────────────────────── */
.theme-toggle {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 4px 8px;
    cursor: pointer;
    font-size: 14px;
    line-height: 1;
    color: var(--text-secondary);
    transition: background 0.2s;
    display: flex;
    align-items: center;
    gap: 4px;
}
.theme-toggle:hover { background: var(--border); }

/* ── Container ─────────────────────────────────── */
.container { max-width: 920px; margin: 24px auto; padding: 0 24px; }

/* ── Navigation Tabs ───────────────────────────── */
.nav { display: flex; gap: 24px; margin-bottom: 20px; }
.nav a {
    color: var(--text-tertiary);
    text-decoration: none;
    font-size: 14px;
    padding-bottom: 6px;
    border-bottom: 2px solid transparent;
    transition: color 0.15s;
}
.nav a:hover { color: var(--text-primary); text-decoration: none; }
.nav a.active { color: var(--accent); border-bottom-color: var(--accent); }

/* ── Sections / Cards ──────────────────────────── */
.section {
    background: var(--bg-secondary);
    border-radius: var(--radius);
    margin-bottom: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}
.section-header {
    padding: 14px 20px;
    border-bottom: 1px solid var(--border);
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.section-body { padding: 16px 20px; }

/* ── Buttons ───────────────────────────────────── */
.btn {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: background 0.15s;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--accent-strong); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary { background: var(--border); color: var(--text-primary); }
.btn-secondary:hover { background: var(--border-hover); }
.btn-danger { background: var(--red); color: #fff; }
.btn-danger:hover { background: #b91c1c; }
.btn-success { background: var(--green); color: #fff; }
.btn:disabled { background: var(--border-hover); cursor: not-allowed; color: var(--text-secondary); }

/* Action button variants (dashboard) */
.action-btn { padding: 10px 20px; border-radius: var(--radius); font-size: 13px; font-weight: 500; cursor: pointer; border: none; text-decoration: none; display: inline-flex; align-items: center; gap: 6px; transition: background 0.15s; }
.action-btn-primary { background: var(--accent-strong); color: #fff; }
.action-btn-primary:hover { background: var(--accent-hover); text-decoration: none; }
.action-btn-secondary { background: var(--border); color: var(--text-primary); }
.action-btn-secondary:hover { background: var(--border-hover); text-decoration: none; }
.action-btn:disabled { background: var(--border-hover); cursor: not-allowed; color: var(--text-secondary); }
.action-btn-success { background: var(--green); color: #fff; }

/* ── Form Elements ─────────────────────────────── */
input[type="text"], input[type="email"], input[type="url"], input[type="password"], select, textarea {
    padding: 10px 14px;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 14px;
    width: 100%;
    transition: border-color 0.15s;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--input-focus); }
textarea { font-family: monospace; font-size: 13px; resize: vertical; min-height: 120px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 12px; color: var(--text-secondary); margin-bottom: 4px; text-transform: uppercase; letter-spacing: 0.5px; }

/* ── Status Messages ───────────────────────────── */
.status-msg { padding: 8px 12px; border-radius: var(--radius-sm); font-size: 13px; margin-bottom: 12px; display: none; }
.status-success { background: var(--bg-success); color: var(--text-success); display: block; }
.status-error { background: var(--bg-danger); color: var(--text-danger); display: block; }

/* ── Severity Colors ───────────────────────────── */
.severity-critical, .stat-value.critical { color: var(--red); }
.severity-high, .stat-value.high { color: var(--amber); }
.severity-medium, .stat-value.medium { color: var(--blue); }
.severity-low, .stat-value.low, .stat-value.green { color: var(--green); }

/* ── Tier Badges ───────────────────────────────── */
.tier-free { background: var(--border); color: var(--text-secondary); }
.tier-pro { background: var(--bg-info); color: var(--text-info); }
.tier-premium { background: var(--bg-premium); color: var(--text-purple); }

/* ── Tier Banners ──────────────────────────────── */
.tier-banner { padding: 16px 20px; border-radius: var(--radius); margin-bottom: 20px; display: flex; align-items: center; gap: 16px; }
.tier-banner.RED { background: var(--bg-danger); border: 1px solid var(--red); }
.tier-banner.YELLOW { background: var(--bg-warning); border: 1px solid var(--amber); }
.tier-banner.GREEN { background: var(--bg-success); border: 1px solid var(--green); }
.tier-badge { font-size: 28px; font-weight: 700; }
.tier-banner.RED .tier-badge { color: var(--text-danger); }
.tier-banner.YELLOW .tier-badge { color: var(--text-warning); }
.tier-banner.GREEN .tier-badge { color: var(--text-success); }

/* ── Alert Cards ───────────────────────────────── */
.alert-card { background: var(--bg-tertiary); border-radius: var(--radius); padding: 14px 16px; margin-bottom: 10px; border-left: 4px solid var(--border-hover); }
.alert-card.RED { border-left-color: var(--red); }
.alert-card.YELLOW { border-left-color: var(--amber); }
.ac-header { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; }
.ac-tier { padding: 2px 8px; border-radius: var(--radius-sm); font-size: 10px; font-weight: 700; }
.ac-tier.RED { background: var(--red); color: #fff; }
.ac-tier.YELLOW { background: var(--amber); color: #000; }
.ac-product { font-weight: 600; font-size: 14px; }
.ac-threat { color: var(--text-secondary); font-size: 13px; margin-bottom: 4px; }
.ac-meta { font-size: 12px; color: var(--text-tertiary); }
.ac-note { font-size: 12px; color: var(--text-tertiary); margin-top: 6px; padding: 8px 10px; background: var(--bg-secondary); border-radius: var(--radius-sm); }
.ac-actions { margin-top: 8px; display: flex; gap: 8px; }
.ac-btn { font-size: 11px; padding: 4px 10px; border-radius: 5px; cursor: pointer; border: none; }
.ac-btn-vendor { background: var(--bg-info); color: var(--text-info); }
.ac-btn-done { background: var(--bg-secondary); color: var(--text-secondary); border: 1px solid var(--border); }
.ac-btn-done.reviewed { background: var(--bg-success); color: var(--text-success); border-color: var(--green); }
.ac-detail { display: none; margin-top: 10px; padding-top: 10px; border-top: 1px solid var(--bg-secondary); }
.ac-detail.open { display: block; }
.ac-detail-section { margin-bottom: 12px; font-size: 13px; color: var(--text-body); line-height: 1.6; }
.ac-detail-label { font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-tertiary); margin-bottom: 4px; font-weight: 600; }

/* ── Analysis Content ──────────────────────────── */
.analysis { line-height: 1.8; font-size: 14px; color: var(--text-body); }
.analysis h1, .analysis h2, .analysis h3 { color: var(--text-primary); margin: 16px 0 8px; font-size: 15px; }
.analysis h1:first-child, .analysis h2:first-child { margin-top: 0; }
.analysis p { margin-bottom: 10px; }
.analysis strong { color: var(--text-primary); }
.analysis ul, .analysis ol { margin: 6px 0 10px 20px; }
.analysis li { margin-bottom: 4px; }
.analysis code { background: var(--border); padding: 1px 6px; border-radius: var(--radius-xs); font-size: 13px; }

/* ── Engagement Cards ──────────────────────────── */
.engagement-card { background: var(--bg-tertiary); border-radius: var(--radius); padding: 16px; margin-bottom: 12px; border-left: 4px solid var(--border); }
.engagement-card.scanning { border-left-color: var(--blue); }
.engagement-card.awaiting_answers { border-left-color: var(--amber); }
.engagement-card.complete { border-left-color: var(--green); }
.engagement-card.error { border-left-color: var(--red); }
.eng-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.eng-name { font-weight: 600; font-size: 15px; }
.eng-status { font-size: 11px; padding: 3px 10px; border-radius: var(--radius-xs); font-weight: 600; text-transform: uppercase; }
.eng-status.scanning { background: var(--bg-info); color: var(--text-info); }
.eng-status.awaiting_answers { background: var(--bg-warning); color: var(--text-warning); }
.eng-status.complete { background: var(--bg-success); color: var(--text-success); }
.eng-status.error { background: var(--bg-danger); color: var(--text-danger); }
.eng-status.pending_repo { background: var(--border); color: var(--text-secondary); }
.eng-status.generating_report { background: var(--bg-purple); color: var(--text-purple); }
.eng-status.pending_review { background: var(--bg-warning); color: var(--text-warning); }
.eng-meta { font-size: 12px; color: var(--text-tertiary); }

/* ── Stat Cards ────────────────────────────────── */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 20px; }
.stat-card { background: var(--bg-secondary); border-radius: var(--radius); padding: 14px; text-align: center; box-shadow: var(--shadow-sm); }
.stat-value { font-size: 24px; font-weight: 700; }
.stat-label { font-size: 10px; color: var(--text-tertiary); text-transform: uppercase; margin-top: 2px; letter-spacing: 0.5px; }

/* ── Question Cards ────────────────────────────── */
.question-card { background: var(--bg-tertiary); border-radius: var(--radius); padding: 16px; margin-bottom: 12px; }
.q-text { font-size: 14px; margin-bottom: 8px; font-weight: 500; }
.q-why { font-size: 11px; color: var(--text-tertiary); margin-bottom: 10px; font-style: italic; }
.q-options label { display: block; padding: 6px 12px; margin: 2px 0; border-radius: var(--radius-xs); font-size: 13px; cursor: pointer; }
.q-options label:hover { background: var(--bg-secondary); }
.q-options input[type="radio"] { margin-right: 8px; }

/* ── Empty State ───────────────────────────────── */
.empty-state { text-align: center; padding: 48px 24px; color: var(--text-tertiary); }
.empty-state h3 { color: var(--text-primary); margin-bottom: 8px; }

/* ── Template Cards ────────────────────────────── */
.template-card { background: var(--bg-tertiary); border-radius: var(--radius); padding: 14px; margin-bottom: 10px; }
.template-name { font-weight: 600; font-size: 14px; margin-bottom: 4px; }
.template-meta { font-size: 12px; color: var(--text-tertiary); }

/* ── Customer Rows ─────────────────────────────── */
.customer-row { display: flex; align-items: center; justify-content: space-between; padding: 12px 0; border-bottom: 1px solid var(--bg-primary); }
.customer-row:last-child { border-bottom: none; }
.customer-name { font-weight: 600; font-size: 14px; }
.customer-meta { font-size: 12px; color: var(--text-tertiary); }
.customer-tier { font-size: 11px; padding: 2px 8px; border-radius: var(--radius-xs); }

/* ── Report Cards ──────────────────────────────── */
.report-card { background: var(--bg-tertiary); border-radius: var(--radius); padding: 16px; margin-bottom: 10px; display: flex; align-items: center; justify-content: space-between; }
.report-icon { font-size: 24px; margin-right: 12px; }
.report-title { font-weight: 600; font-size: 14px; }
.report-desc { font-size: 12px; color: var(--text-tertiary); }

/* ── Responsive ────────────────────────────────── */
@media (max-width: 768px) {
    .header { padding: 12px 16px; }
    .header h1 { font-size: 15px; }
    .header-right { gap: 10px; font-size: 12px; }
    .container { padding: 0 16px; margin: 16px auto; }
    .nav { gap: 16px; overflow-x: auto; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}