/* Procurement Advisor — buybuy.quietimpact.ai */

:root {
    --primary: #1a5276;
    --primary-light: #2980b9;
    --accent: #e67e22;
    --bg: #f8f9fa;
    --card-bg: #ffffff;
    --text: #2c3e50;
    --text-light: #7f8c8d;
    --border: #dee2e6;
    --success: #27ae60;
    --warning: #f39c12;
    --danger: #e74c3c;
    --info: #3498db;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
}

/* Header / Nav */
header {
    background: var(--primary);
    color: white;
    padding: 0.75rem 1.5rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

nav {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

nav .logo {
    color: white;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
}

.nav-links a {
    color: rgba(255,255,255,0.85);
    text-decoration: none;
    margin-left: 1.5rem;
    font-size: 0.9rem;
}

.nav-links a:hover { color: white; }
.nav-links .logout { color: rgba(255,255,255,0.6); }

/* Main Content */
main {
    max-width: 1100px;
    margin: 2rem auto;
    padding: 0 1.5rem;
}

/* Footer */
footer {
    max-width: 1100px;
    margin: 3rem auto 1.5rem;
    padding: 1.5rem;
    border-top: 1px solid var(--border);
    font-size: 0.8rem;
    color: var(--text-light);
}

footer .disclaimer {
    background: #fef9e7;
    border: 1px solid #f9e79f;
    padding: 0.75rem 1rem;
    border-radius: 6px;
    margin-bottom: 1rem;
}

footer .footer-info { text-align: center; }
footer a { color: var(--primary-light); }

/* Buttons */
.btn-primary {
    background: var(--primary);
    color: white;
    border: none;
    padding: 0.7rem 1.5rem;
    border-radius: 6px;
    font-size: 1rem;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
}

.btn-primary:hover { background: var(--primary-light); }

/* Landing Page */
.landing {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, #2c3e50 100%);
    color: white;
    text-align: center;
    padding: 2rem;
}

.landing h1 { font-size: 2.5rem; margin-bottom: 0.5rem; }
.landing .tagline { font-size: 1.2rem; opacity: 0.9; margin-bottom: 2rem; }

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
    max-width: 700px;
}

.feature {
    background: rgba(255,255,255,0.1);
    padding: 1.25rem;
    border-radius: 8px;
}

.feature h3 { margin-bottom: 0.5rem; }
.feature p { font-size: 0.9rem; opacity: 0.85; }

.landing .btn-primary {
    background: var(--accent);
    font-size: 1.1rem;
    padding: 0.8rem 2.5rem;
    margin-top: 1rem;
}

.landing .btn-primary:hover { background: #d35400; }
.landing .note { margin-top: 1.5rem; font-size: 0.85rem; opacity: 0.7; }

/* Login Page */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
}

.login-box {
    background: white;
    padding: 2.5rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    text-align: center;
    max-width: 400px;
    width: 100%;
}

.login-box h1 { color: var(--primary); margin-bottom: 0.5rem; }
.login-box p { color: var(--text-light); margin-bottom: 1.5rem; }

.login-box input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 1rem;
    margin-bottom: 1rem;
}

.login-box .btn-primary { width: 100%; }
.back-link { display: block; margin-top: 1rem; color: var(--text-light); font-size: 0.9rem; }
.error { color: var(--danger); margin-bottom: 1rem; font-size: 0.9rem; }

/* Home Page */
.home-page h1 { margin-bottom: 0.25rem; }
.home-page .subtitle { color: var(--text-light); margin-bottom: 2rem; }

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.card {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    border: 1px solid var(--border);
    text-decoration: none;
    color: var(--text);
    transition: box-shadow 0.2s, transform 0.2s;
}

.card:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transform: translateY(-2px);
}

.card h2 { color: var(--primary); margin-bottom: 0.5rem; }
.card p { font-size: 0.95rem; margin-bottom: 0.75rem; }
.card .examples { font-size: 0.85rem; color: var(--text-light); }

.info-box {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    border: 1px solid var(--border);
}

.info-box h3 { margin-bottom: 1rem; color: var(--primary); }

.info-box table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.info-box th, .info-box td {
    padding: 0.5rem 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.info-box th { background: var(--bg); font-weight: 600; }
.table-note { font-size: 0.8rem; color: var(--text-light); margin-top: 0.5rem; }

/* Advisor Page */
.advisor-page h1 { margin-bottom: 0.25rem; }
.advisor-page > p { color: var(--text-light); margin-bottom: 1.5rem; }

.advisor-page form {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.advisor-page textarea {
    flex: 1;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 1rem;
    font-family: inherit;
    resize: vertical;
}

.suggestions { margin-bottom: 1.5rem; }
.suggestions h3 { margin-bottom: 0.75rem; font-size: 0.95rem; }

.suggestion-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.suggestion-chips button {
    background: white;
    border: 1px solid var(--border);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    cursor: pointer;
    color: var(--primary);
}

.suggestion-chips button:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.response-box {
    background: white;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1.5rem;
}

.response-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
}

.badge.cached {
    background: #e8f8f5;
    color: var(--success);
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
    font-size: 0.75rem;
}

.response-content {
    font-size: 0.95rem;
    line-height: 1.7;
}

.response-content h1, .response-content h2, .response-content h3 {
    color: var(--primary);
    margin-top: 1rem;
    margin-bottom: 0.5rem;
}

.response-content ul, .response-content ol {
    margin: 0.5rem 0 0.5rem 1.5rem;
}

.response-content li { margin-bottom: 0.3rem; }
.response-content hr { margin: 1rem 0; border-color: var(--border); }
.response-content em { color: var(--text-light); }

/* Decision Tree Page */
.decision-page h1 { margin-bottom: 0.25rem; }
.decision-page > p { color: var(--text-light); margin-bottom: 1.5rem; }

.decision-form {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    border: 1px solid var(--border);
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.3rem;
    font-size: 0.95rem;
}

.form-group select, .form-group input {
    width: 100%;
    padding: 0.65rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 1rem;
    font-family: inherit;
}

/* Result Box */
.result-box {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    border: 1px solid var(--border);
}

.result-box h2 { color: var(--primary); margin-bottom: 1rem; }
.result-box h3 { margin-top: 1.5rem; margin-bottom: 0.75rem; }

.result-summary {
    background: var(--bg);
    padding: 1rem;
    border-radius: 6px;
    margin-bottom: 1rem;
}

.result-item { margin-bottom: 0.5rem; }
.result-item.note { color: var(--accent); font-style: italic; }

.process-badge {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    font-size: 0.9rem;
}

/* Checklist */
.checklist { margin: 0.5rem 0; }

.checklist-item {
    display: flex;
    gap: 0.75rem;
    padding: 0.75rem;
    border-bottom: 1px solid var(--border);
}

.checklist-item:last-child { border-bottom: none; }

.check-marker {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-weight: 700;
    font-size: 0.8rem;
}

.icon.required { background: #fadbd8; color: var(--danger); }
.icon.recommended { background: #fef9e7; color: var(--warning); }
.icon.clear { background: #d5f5e3; color: var(--success); }
.icon.info { background: #d6eaf8; color: var(--info); }

.check-content strong { font-size: 0.95rem; }
.check-content p { font-size: 0.9rem; color: var(--text-light); margin-top: 0.2rem; }
.check-content .penalty { color: var(--danger); font-size: 0.85rem; }
.statute-ref { color: var(--primary-light); font-size: 0.85rem; margin-left: 0.3rem; }

.disclaimer-box {
    margin-top: 1.5rem;
    padding: 0.75rem 1rem;
    background: #fef9e7;
    border: 1px solid #f9e79f;
    border-radius: 6px;
    font-size: 0.85rem;
}

/* Loading spinner */
.loading-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(255,255,255,0.85);
    z-index: 200;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

.loading-overlay.active { display: flex; }

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border);
    border-top: 4px solid var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.loading-text {
    margin-top: 1rem;
    color: var(--text-light);
    font-size: 0.95rem;
}

/* Table scroll wrapper */
.table-scroll {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* Responsive */
@media (max-width: 768px) {
    /* Navigation: horizontal scroll instead of wrapping */
    header { padding: 0.6rem 1rem; }

    nav {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }

    nav .logo { font-size: 1rem; white-space: nowrap; }

    .nav-links {
        display: flex;
        gap: 0;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .nav-links a {
        margin-left: 0.75rem;
        white-space: nowrap;
        padding: 0.4rem 0;
        font-size: 0.8rem;
    }

    /* Landing page */
    .landing { padding: 1.5rem; }
    .landing h1 { font-size: 1.8rem; }
    .landing .tagline { font-size: 1rem; }
    .features { grid-template-columns: 1fr; gap: 1rem; }
    .feature { padding: 1rem; }

    /* Login */
    .login-box { padding: 1.5rem; margin: 1rem; }

    /* Main content */
    main { margin: 1rem auto; padding: 0 1rem; }

    /* Cards */
    .card-grid { grid-template-columns: 1fr; gap: 1rem; }
    .card { padding: 1.25rem; }
    .card h2 { font-size: 1.1rem; }

    /* Tables: horizontal scroll */
    .info-box { padding: 1rem; overflow-x: auto; }
    .info-box table { min-width: 500px; }
    .info-box th, .info-box td { padding: 0.4rem 0.5rem; font-size: 0.8rem; }

    /* Advisor form: stack vertically */
    .advisor-page form {
        flex-direction: column;
    }

    .advisor-page textarea {
        min-height: 80px;
        font-size: 16px; /* prevents iOS zoom */
    }

    .advisor-page .btn-primary {
        width: 100%;
        padding: 0.8rem;
        font-size: 1rem;
    }

    /* Suggestion chips: larger tap targets */
    .suggestion-chips button {
        padding: 0.6rem 1rem;
        font-size: 0.85rem;
        min-height: 44px;
    }

    /* Decision form */
    .decision-form { padding: 1rem; }

    .form-group select, .form-group input {
        font-size: 16px; /* prevents iOS zoom */
        padding: 0.75rem;
        min-height: 44px;
    }

    .form-group label { font-size: 0.9rem; }

    /* Buttons: full-width on mobile */
    .btn-primary {
        width: 100%;
        padding: 0.8rem 1.5rem;
        font-size: 1rem;
        min-height: 44px;
        text-align: center;
    }

    /* Response box */
    .response-box { padding: 1rem; }
    .response-content { font-size: 0.9rem; }
    .response-content h1 { font-size: 1.3rem; }
    .response-content h2 { font-size: 1.15rem; }
    .response-content h3 { font-size: 1.05rem; }

    /* Result box */
    .result-box { padding: 1rem; }
    .result-summary { padding: 0.75rem; }

    /* Checklist: tighter on mobile */
    .checklist-item { padding: 0.6rem 0.25rem; gap: 0.5rem; }
    .check-marker { width: 24px; height: 24px; font-size: 0.7rem; }
    .check-content strong { font-size: 0.9rem; }
    .check-content p { font-size: 0.8rem; }

    /* Footer */
    footer { padding: 1rem; margin: 2rem auto 1rem; }
    footer .disclaimer { padding: 0.6rem 0.75rem; font-size: 0.75rem; }
}

/* Extra small screens (iPhone SE, etc.) */
@media (max-width: 380px) {
    .landing h1 { font-size: 1.5rem; }
    nav .logo { font-size: 0.9rem; }
    .nav-links a { font-size: 0.75rem; margin-left: 0.5rem; }
    .card h2 { font-size: 1rem; }
    .info-box table { min-width: 450px; }
}

/* Post-answer UX */
.hidden { display: none; }
.new-question-section {
    text-align: center;
    margin: 1.5rem 0;
}
.btn-new-question {
    font-size: 1.1rem;
    padding: 0.9rem 2rem;
    min-height: 48px;
}