/* ── AI-Readiness Survey Platform — Design System ──── */

:root {
    --color-bg: #f8f9fb;
    --color-surface: #ffffff;
    --color-border: #e2e6ed;
    --color-text: #1a1d23;
    --color-text-muted: #6b7280;
    --color-primary: #0f766e;
    --color-primary-hover: #0d9488;
    --color-primary-light: #ccfbf1;
    --color-danger: #dc2626;
    --color-success: #16a34a;
    --color-warning: #d97706;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-lg: 0 4px 12px rgba(0,0,0,0.08);
    --font: 'Inter', system-ui, -apple-system, sans-serif;
    --max-width: 960px;
}

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

body {
    font-family: var(--font);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
}

/* ── Layout ──────────────────────────────────────────── */

.app-shell { display: flex; flex-direction: column; min-height: 100vh; }

.app-header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 0 1.5rem;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
}

.app-header__brand { font-weight: 700; font-size: 1.1rem; color: var(--color-primary); text-decoration: none; }
.app-header__nav { display: flex; align-items: center; gap: 0.75rem; }
.app-header__user { color: var(--color-text-muted); font-size: 0.85rem; }

.app-main {
    flex: 1;
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

/* ── Card ────────────────────────────────────────────── */

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
}
.card--narrow { max-width: 420px; margin: 2rem auto; }
.card h2 { margin-bottom: 0.5rem; }
.card h3 { margin-bottom: 0.75rem; font-size: 1.05rem; }

/* ── Stats Grid ──────────────────────────────────────── */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1rem;
}
.stat-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.25rem;
    text-align: center;
}
.stat-value { font-size: 2rem; font-weight: 700; color: var(--color-primary); }
.stat-label { font-size: 0.8rem; color: var(--color-text-muted); margin-top: 0.25rem; text-transform: uppercase; letter-spacing: 0.05em; }

/* ── Buttons ─────────────────────────────────────────── */

.btn {
    display: inline-flex; align-items: center; gap: 0.5rem;
    padding: 0.6rem 1.2rem; border-radius: var(--radius);
    border: 1px solid var(--color-border); background: var(--color-surface);
    color: var(--color-text); font-size: 0.875rem; font-weight: 500;
    cursor: pointer; text-decoration: none; transition: all 0.15s;
}
.btn:hover { box-shadow: var(--shadow); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn--primary { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.btn--primary:hover { background: var(--color-primary-hover); }
.btn--secondary { background: var(--color-bg); }
.btn--full { width: 100%; justify-content: center; }
.btn--sm { padding: 0.35rem 0.75rem; font-size: 0.8rem; }
.btn-group { display: flex; gap: 0.5rem; flex-wrap: wrap; }

/* ── Forms ────────────────────────────────────────────── */

label { display: block; margin-bottom: 1rem; font-size: 0.875rem; font-weight: 500; color: var(--color-text-muted); }
input, textarea, select {
    display: block; width: 100%; padding: 0.6rem 0.75rem; margin-top: 0.35rem;
    border: 1px solid var(--color-border); border-radius: var(--radius);
    font-size: 0.95rem; font-family: inherit; color: var(--color-text); background: var(--color-surface);
}
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px var(--color-primary-light); }

/* ── Alerts ──────────────────────────────────────────── */

.alert { padding: 0.75rem 1rem; border-radius: var(--radius); font-size: 0.875rem; margin-bottom: 1rem; }
.alert--error { background: #fef2f2; color: var(--color-danger); border: 1px solid #fecaca; }
.alert--success { background: #f0fdf4; color: var(--color-success); border: 1px solid #bbf7d0; }

/* ── Badges ──────────────────────────────────────────── */

.badge {
    display: inline-block; padding: 0.15rem 0.6rem; border-radius: 12px;
    font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em;
}
.badge--active, .badge--employee { background: #dcfce7; color: #166534; }
.badge--draft, .badge--manager { background: #f3f4f6; color: #6b7280; }
.badge--closed { background: #fee2e2; color: #991b1b; }
.badge--consultant { background: #dbeafe; color: #1e40af; }
.badge--engineer { background: #fef3c7; color: #92400e; }
.badge--critical { background: #fee2e2; color: #991b1b; }
.badge--high { background: #fff7ed; color: #9a3412; }
.badge--medium { background: #fef3c7; color: #92400e; }
.badge--low { background: #dcfce7; color: #166534; }

/* ── Tables ──────────────────────────────────────────── */

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
th { text-align: left; padding: 0.6rem 0.75rem; border-bottom: 2px solid var(--color-border); color: var(--color-text-muted); font-weight: 600; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.04em; }
td { padding: 0.6rem 0.75rem; border-bottom: 1px solid var(--color-border); }
tr:hover td { background: var(--color-bg); }

/* ── Score Bars (Analytics) ──────────────────────────── */

.score-bar { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.75rem; }
.score-bar__label { flex: 0 0 220px; font-size: 0.85rem; text-align: right; color: var(--color-text-muted); }
.score-bar__track { flex: 1; height: 20px; background: var(--color-bg); border-radius: 10px; overflow: hidden; border: 1px solid var(--color-border); }
.score-bar__fill { height: 100%; background: linear-gradient(90deg, var(--color-primary), var(--color-primary-hover)); border-radius: 10px; transition: width 0.6s ease; min-width: 2px; }
.score-bar__value { flex: 0 0 40px; font-weight: 700; font-size: 0.9rem; color: var(--color-primary); }

/* ── Survey Questions & Likert Scale ─────────────────── */

.question-section { font-weight: 700; font-size: 1rem; color: var(--color-primary); margin-bottom: 0.5rem; padding-bottom: 0.5rem; border-bottom: 2px solid var(--color-primary-light); }
.question-text { margin-bottom: 0.75rem; }
.question-card { transition: box-shadow 0.15s; }
.question-card:hover { box-shadow: var(--shadow-lg); }

.likert-legend {
    display: flex; gap: 1.5rem; justify-content: center; flex-wrap: wrap;
    padding: 0.75rem 1rem; margin-bottom: 1.5rem;
    background: var(--color-primary-light); border-radius: var(--radius);
    font-size: 0.8rem; color: var(--color-primary); font-weight: 500;
}

.likert-row { display: flex; gap: 0.5rem; justify-content: center; }

.likert-option {
    display: flex; flex-direction: column; align-items: center; cursor: pointer;
    padding: 0.5rem 0.75rem; border-radius: var(--radius);
    border: 2px solid var(--color-border); transition: all 0.15s; min-width: 48px;
    background: var(--color-surface);
}
.likert-option:hover { border-color: var(--color-primary); background: var(--color-primary-light); }
.likert-option input[type="radio"] { display: none; }
.likert-value { font-size: 1.1rem; font-weight: 600; color: var(--color-text-muted); }
.likert-option--selected {
    border-color: var(--color-primary); background: var(--color-primary);
}
.likert-option--selected .likert-value { color: #fff; }

/* ── CLEAN Phase Cards ───────────────────────────────── */

.clean-phase-card { border-left: 4px solid var(--color-primary); }
.clean-phase-card h3 { display: flex; gap: 0.5rem; align-items: baseline; flex-wrap: wrap; }

/* ── Utilities ───────────────────────────────────────── */

.text-muted { color: var(--color-text-muted); }
ul { padding-left: 1rem; }

/* ── Responsive ──────────────────────────────────────── */

@media (max-width: 640px) {
    .app-main { padding: 1rem; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .score-bar { flex-wrap: wrap; }
    .score-bar__label { flex: 0 0 100%; text-align: left; }
    .likert-row { flex-wrap: wrap; }
    .likert-legend { gap: 0.5rem; font-size: 0.7rem; }
    .app-header__nav { gap: 0.35rem; }
    .btn--sm { padding: 0.25rem 0.5rem; font-size: 0.75rem; }
}