/* ── OIR Platform — Design System ───────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  --bg: #ffffff; --bg-secondary: #f7f8fa; --bg-tertiary: #eef0f4;
  --surface: #ffffff; --border: #e2e6ee; --border-hover: #c8cdd7;
  --text: #1a1d23; --text-secondary: #5f6775; --text-tertiary: #9ca3af;
  --primary: #2563eb; --primary-hover: #1d4ed8;
  --success: #10b981; --warning: #f59e0b; --danger: #ef4444; --accent: #7c3aed;
  --font: 'Inter', system-ui, -apple-system, sans-serif;
  --radius-sm: 6px; --radius-md: 8px; --radius-lg: 12px; --radius-xl: 16px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.08);
  --transition: 200ms ease;
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.5;-webkit-font-smoothing:antialiased}
a{color:var(--primary);text-decoration:none}
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}

/* Login */
.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#f7f8fa 0%,#eef0f4 100%)}
.login-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-xl);padding:48px;width:400px;box-shadow:var(--shadow-lg)}
.login-card .logo{text-align:center;margin-bottom:28px}
.login-card .logo img{height:36px}
.login-card h1{font-size:22px;font-weight:700;margin-bottom:4px;text-align:center}
.login-card p{color:var(--text-secondary);font-size:14px;margin-bottom:28px;text-align:center}
.login-card input{width:100%;padding:12px 16px;border:1px solid var(--border);border-radius:var(--radius-md);font-size:14px;margin-bottom:12px;outline:0;font-family:var(--font)}
.login-card input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(37,99,235,0.1)}
.login-card button{width:100%;padding:12px;background:var(--primary);color:#fff;border:none;border-radius:var(--radius-md);font-size:14px;font-weight:600;cursor:pointer;font-family:var(--font)}
.login-card button:hover{background:var(--primary-hover)}

/* App Layout */
.app{display:flex;min-height:100vh}
.sidebar{width:260px;background:var(--surface);border-right:1px solid var(--border);position:fixed;height:100vh;overflow-y:auto;z-index:100}
.sidebar .logo{padding:20px 24px;border-bottom:1px solid var(--border);font-size:15px;font-weight:700;display:flex;align-items:center;gap:10px;cursor:pointer}
.sidebar .logo img{height:22px}
.sidebar .logo span{color:var(--text-tertiary);font-weight:400;font-size:11px;margin-left:auto}
.sidebar .nav-section{padding:16px 24px 8px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:0.05em;color:var(--text-tertiary)}
.sidebar .nav-item{display:flex;align-items:center;gap:10px;padding:8px 16px;margin:2px 12px;border-radius:var(--radius-md);color:var(--text-secondary);cursor:pointer;font-size:14px;transition:var(--transition);border:none;background:none;font-family:var(--font)}
.sidebar .nav-item:hover{background:var(--bg-secondary);color:var(--text)}
.sidebar .nav-item.active{background:var(--bg-tertiary);color:var(--text);font-weight:500}
.main{flex:1;margin-left:260px}

/* Top Bar */
.topbar{display:flex;align-items:center;justify-content:space-between;padding:16px 32px;border-bottom:1px solid var(--border);background:var(--surface);position:sticky;top:0;z-index:50}
.topbar h2{font-size:18px;font-weight:600}
.topbar .search{display:flex;align-items:center;gap:8px;background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-md);padding:8px 14px;width:320px;color:var(--text-tertiary);font-size:13px}
.topbar .search input{border:none;background:none;outline:none;font-size:13px;font-family:var(--font);width:100%;color:var(--text)}
.topbar .user{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-secondary);cursor:pointer}
.topbar .user .avatar{width:32px;height:32px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:600}

/* Pages */
.content{padding:24px 32px}
.page{display:none}
.page.active{display:block}

/* Cards */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;margin-bottom:16px}
.card-title{font-size:16px;font-weight:600;margin-bottom:4px}
.card-desc{font-size:13px;color:var(--text-secondary);margin-bottom:16px}

/* KPI Row */
.kpi-row{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:24px}
.kpi-card{border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px 24px;transition:var(--transition)}
.kpi-card:hover{border-color:var(--border-hover);box-shadow:var(--shadow-sm)}
.kpi-card .kpi-icon{font-size:20px;margin-bottom:8px;display:block}
.kpi-card .kpi-label{font-size:12px;color:var(--text-secondary);margin-bottom:4px;font-weight:500}
.kpi-card .kpi-value{font-size:32px;font-weight:700;letter-spacing:-0.02em;line-height:1.1}
.kpi-card .kpi-sub{font-size:12px;color:var(--text-tertiary);margin-top:4px}

/* Table */
.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius-lg)}
table{width:100%;border-collapse:collapse}
th{text-align:left;padding:12px 16px;font-size:12px;font-weight:600;color:var(--text-tertiary);text-transform:uppercase;letter-spacing:0.04em;border-bottom:1px solid var(--border);background:var(--bg-secondary)}
td{padding:12px 16px;font-size:13px;border-bottom:1px solid var(--border)}
tr.clickable{cursor:pointer;transition:var(--transition)}
tr.clickable:hover td{background:var(--bg-secondary)}

/* Badges */
.badge{display:inline-flex;align-items:center;padding:2px 10px;border-radius:999px;font-size:11px;font-weight:600}
.badge-go{background:#ecfdf5;color:#059669}
.badge-watch{background:#fffbeb;color:#d97706}
.badge-develop{background:#eff6ff;color:#2563eb}
.badge-avoid{background:#fef2f2;color:#dc2626}
.badge-draft{background:#f1f5f9;color:#64748b}
.badge-reviewed{background:#fefce8;color:#a16207}
.badge-published{background:#ecfdf5;color:#059669}
.badge-ai{background:#f5f3ff;color:#7c3aed;font-size:10px;padding:1px 6px}
.badge-human{background:#eff6ff;color:#2563eb;font-size:10px;padding:1px 6px}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:var(--radius-md);font-size:13px;font-weight:500;cursor:pointer;font-family:var(--font);border:1px solid var(--border);background:var(--surface);color:var(--text);transition:var(--transition)}
.btn:hover{border-color:var(--border-hover);background:var(--bg-secondary)}
.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn-primary:hover{background:var(--primary-hover)}
.btn-ghost{border:none;background:transparent;color:var(--text-secondary)}
.btn-ghost:hover{background:var(--bg-secondary);color:var(--text)}
.btn-sm{padding:4px 10px;font-size:12px}

/* OIR Header */
.oir-header{border-bottom:1px solid var(--border);padding:24px 32px;background:var(--surface)}
.oir-header .eoid{font-size:12px;color:var(--text-tertiary);font-weight:500;letter-spacing:0.03em;margin-bottom:4px}
.oir-header h1{font-size:24px;font-weight:700;margin-bottom:8px;letter-spacing:-0.02em}
.oir-header .meta{display:flex;flex-wrap:wrap;gap:16px;font-size:13px;color:var(--text-secondary);margin-bottom:12px}
.oir-header .actions{display:flex;gap:8px;flex-wrap:wrap}

/* OIR Tabs */
.oir-tabs{display:flex;gap:4px;padding:0 32px;background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:60px;z-index:40;overflow-x:auto}
.oir-tab{padding:12px 16px;font-size:13px;color:var(--text-secondary);cursor:pointer;border-bottom:2px solid transparent;transition:var(--transition);white-space:nowrap;border:none;background:none;font-family:var(--font)}
.oir-tab:hover{color:var(--text)}
.oir-tab.active{color:var(--primary);border-bottom-color:var(--primary);font-weight:500}

/* OIR Body */
.oir-body{padding:24px 32px;max-width:960px}
.oir-section{margin-bottom:40px}
.oir-section .section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--border)}
.oir-section .section-head h2{font-size:18px;font-weight:600}
.section-body{font-size:14px;line-height:1.7;color:var(--text)}
.section-body .kv-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.section-body .kv-item{padding:12px;background:var(--bg-secondary);border-radius:var(--radius-md)}
.section-body .kv-item .key{font-size:11px;color:var(--text-tertiary);text-transform:uppercase;margin-bottom:2px}
.section-body .kv-item .val{font-size:14px;font-weight:500}
.section-body .insight-item{padding:12px 16px;border-left:3px solid var(--success);background:var(--bg-secondary);border-radius:0 var(--radius-md) var(--radius-md) 0;margin-bottom:8px}
.section-body .action-item{display:flex;align-items:center;gap:12px;padding:12px;border:1px solid var(--border);border-radius:var(--radius-md);margin-bottom:6px;cursor:pointer}
.section-body .action-item .checkbox{width:18px;height:18px;border:2px solid var(--border);border-radius:4px;cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:10px}
.section-body .action-item .checkbox.done{background:var(--success);border-color:var(--success);color:#fff}
.section-body .stakeholder-card{border:1px solid var(--border);border-radius:var(--radius-md);padding:16px;margin-bottom:8px}
.section-body .stakeholder-card .name{font-weight:600}
.section-body .milestone{display:flex;gap:12px;padding:12px 0 12px 28px;position:relative}
.section-body .milestone::before{content:'';position:absolute;left:10px;top:0;bottom:0;width:2px;background:var(--border)}
.section-body .milestone .dot{width:20px;height:20px;border-radius:50%;border:2px solid var(--border);background:var(--surface);position:absolute;left:0;top:14px;display:flex;align-items:center;justify-content:center;font-size:8px;color:transparent}
.section-body .milestone .dot.done{background:var(--success);border-color:var(--success)}
.section-body .milestone .dot.active{background:var(--warning);border-color:var(--warning)}

/* Modal */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.4);z-index:999;display:none;align-items:center;justify-content:center;padding:24px}
.modal-overlay.active{display:flex}
.modal{background:var(--surface);border-radius:var(--radius-xl);width:640px;max-width:100%;max-height:80vh;overflow-y:auto;box-shadow:var(--shadow-lg)}
.modal-header{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-bottom:1px solid var(--border)}
.modal-header h3{font-size:16px;font-weight:600}
.modal-close{width:32px;height:32px;border:none;background:none;cursor:pointer;font-size:18px;color:var(--text-secondary);border-radius:var(--radius-sm)}
.modal-close:hover{background:var(--bg-secondary)}
.modal-body{padding:24px}

/* Version Timeline */
.version-item{display:flex;gap:16px;padding:12px 0;position:relative;padding-left:0}
.version-item .v-dot{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;flex-shrink:0}
.version-item .v-dot.ai{background:#f5f3ff;color:#7c3aed}
.version-item .v-dot.human{background:#eff6ff;color:#2563eb}
.version-item .v-dot.system{background:#f1f5f9;color:#64748b}
.version-item .v-info{flex:1}
.version-item .v-info .num{font-weight:600;font-size:14px}
.version-item .v-info .meta{font-size:12px;color:var(--text-tertiary)}
.version-item .v-info .summary{font-size:13px;color:var(--text-secondary);margin-top:4px}

/* PDF Preview */
.pdf-preview{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:40px;max-width:800px;margin:0 auto;font-size:12px;box-shadow:var(--shadow-md)}
.pdf-preview .cover{text-align:center;padding:80px 20px}
.pdf-preview .cover h1{font-size:28px;margin-bottom:8px}
.pdf-preview .cover .rec{display:inline-flex;gap:8px;margin-top:16px}
.pdf-preview .pdf-section{margin-bottom:20px;padding-bottom:16px;border-bottom:1px dashed var(--border)}

/* RTE */
.rte-toolbar{display:flex;gap:4px;padding:8px;border:1px solid var(--border);border-bottom:none;border-radius:var(--radius-md) var(--radius-md) 0 0;background:var(--bg-secondary)}
.rte-toolbar button{width:30px;height:30px;border:none;background:none;border-radius:var(--radius-sm);cursor:pointer;font-size:14px;color:var(--text-secondary)}
.rte-toolbar button:hover{background:var(--bg-tertiary);color:var(--text)}
.rte-content{border:1px solid var(--border);border-radius:0 0 var(--radius-md) var(--radius-md);padding:16px;min-height:100px;font-size:14px;line-height:1.7;outline:none}

/* Settings */
.setting-row{display:flex;justify-content:space-between;align-items:center;padding:14px 0;border-bottom:1px solid var(--border)}
.setting-row:last-child{border:none}
.setting-label .name{font-size:14px;font-weight:500}
.setting-label .desc{font-size:12px;color:var(--text-tertiary);margin-top:2px}
.toggle{width:40px;height:22px;border-radius:11px;background:var(--border);cursor:pointer;position:relative;transition:var(--transition)}
.toggle.on{background:var(--primary)}
.toggle .knob{width:18px;height:18px;border-radius:50%;background:#fff;position:absolute;top:2px;left:2px;transition:var(--transition)}
.toggle.on .knob{left:20px}

/* Empty/Loading */
.empty-state{text-align:center;padding:60px;color:var(--text-tertiary)}
.empty-state .icon{font-size:48px;margin-bottom:16px}
.empty-state h3{font-weight:600;color:var(--text-secondary);margin-bottom:4px}

/* Responsive */
@media(max-width:1024px){.sidebar{width:220px}.main{margin-left:220px}.kpi-row{grid-template-columns:repeat(2,1fr)}}
@media(max-width:768px){.sidebar{width:60px}.sidebar .logo{padding:16px 10px}.sidebar .logo span,.sidebar .nav-section,.sidebar .nav-item span:not(.icon){display:none}.sidebar .nav-item{padding:8px 10px;margin:2px 4px;width:calc(100% - 8px)}.main{margin-left:60px}.content{padding:16px}.topbar{padding:12px 16px}.topbar .search{width:auto;flex:1}.kpi-row{grid-template-columns:repeat(2,1fr);gap:10px}.oir-body{padding:16px;max-width:100%}.oir-header{padding:16px}.oir-header h1{font-size:20px}.oir-tabs{padding:0 12px;overflow-x:auto}.oir-tab{padding:10px 12px;font-size:12px}.section-body .kv-grid{grid-template-columns:1fr}.modal{width:95%}}