/* ── Google Font ─────────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&display=swap');

/* ── Design Tokens ───────────────────────────────────────────────── */
:root {
    --primary:        #2e7d32;
    --primary-light:  #60ad5e;
    --primary-dark:   #005005;
    --secondary:      #fbc02d;
    --secondary-dark: #e4ae28;
    --background:     #f1f8e9;
    --surface:        #ffffff;
    --surface-2:      #f8fdf5;
    --border:         #d4e9d4;
    --text:           #1a2e1a;
    --text-muted:     #4a6741;
    --text-light:     #6b8f6b;
    --danger:         #d32f2f;
    --danger-light:   #ffebee;
    --warning:        #f57c00;
    --warning-light:  #fff8e1;
    --shadow-sm:      0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.05);
    --shadow-md:      0 4px 12px rgba(0,0,0,.08), 0 2px 4px rgba(0,0,0,.05);
    --shadow-lg:      0 10px 30px rgba(0,0,0,.10), 0 4px 8px rgba(0,0,0,.06);
    --radius-sm:      6px;
    --radius:         12px;
    --radius-lg:      18px;
    --transition:     0.2s ease;
}

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

/* ── Base ────────────────────────────────────────────────────────── */
html { scroll-behavior: smooth; }

body {
    font-family: 'Outfit', system-ui, sans-serif;
    background-color: var(--background);
    color: var(--text);
    line-height: 1.65;
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
}

/* ── Navbar ──────────────────────────────────────────────────────── */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--primary);
    padding: 0 5%;
    height: 62px;
    box-shadow: 0 2px 12px rgba(0,0,0,.18);
    gap: 1rem;
}

.logo {
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    white-space: nowrap;
    color: #fff;
}
.logo span { color: var(--secondary); }

.nav-links {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    flex-wrap: nowrap;
    overflow-x: auto;
}

.nav-links a {
    color: rgba(255,255,255,.88);
    text-decoration: none;
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 0.85rem;
    white-space: nowrap;
    transition: background var(--transition), color var(--transition);
}
.nav-links a:hover {
    background: rgba(255,255,255,.15);
    color: #fff;
}
.nav-links a.active {
    background: rgba(255,255,255,.2);
    color: #fff;
    font-weight: 600;
}
.nav-links a.nav-logout {
    color: #ff8a80;
    margin-left: 0.5rem;
}
.nav-links a.nav-logout:hover {
    background: rgba(255,100,100,.15);
    color: #ff5252;
}
.nav-links .btn-nav-signup {
    background: var(--secondary);
    color: var(--text) !important;
    font-weight: 700;
    padding: 0.35rem 1rem;
    border-radius: 20px;
    margin-left: 0.5rem;
}
.nav-links .btn-nav-signup:hover {
    background: var(--secondary-dark);
}

/* ── Layout ──────────────────────────────────────────────────────── */
.container {
    max-width: 1080px;
    margin: 2.5rem auto;
    padding: 0 1.5rem;
}

/* ── Section / Page headers ──────────────────────────────────────── */
.page-header {
    margin-bottom: 2rem;
    padding-bottom: 1.25rem;
    border-bottom: 2px solid var(--border);
}
.page-header h1, .page-header h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-dark);
    display: flex;
    align-items: center;
    gap: 0.6rem;
}
.page-header p {
    color: var(--text-muted);
    margin-top: 0.4rem;
    font-size: 0.95rem;
}

/* ── Card ────────────────────────────────────────────────────────── */
.card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border);
    margin-bottom: 1.75rem;
    transition: box-shadow var(--transition);
}
.card:hover { box-shadow: var(--shadow-lg); }

.card h2, .card h3 {
    color: var(--primary-dark);
    font-weight: 700;
    margin-bottom: 0.85rem;
}

/* ── Typography ──────────────────────────────────────────────────── */
h1, h2, h3, h4 { color: var(--primary-dark); line-height: 1.3; }
h1 { font-size: 2rem; font-weight: 800; margin-bottom: 1rem; }
h2 { font-size: 1.5rem; font-weight: 700; margin-bottom: 0.85rem; }
h3 { font-size: 1.15rem; font-weight: 600; margin-bottom: 0.6rem; }

p { margin-bottom: 0.85rem; color: var(--text-muted); font-size: 0.95rem; }

/* ── Buttons ─────────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    background: var(--primary);
    color: #fff;
    padding: 0.65rem 1.5rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    letter-spacing: 0.01em;
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
    box-shadow: 0 2px 6px rgba(46,125,50,.25);
}
.btn:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(46,125,50,.35);
}
.btn:active { transform: translateY(0); }

.btn-secondary {
    background: var(--secondary);
    color: var(--text);
    box-shadow: 0 2px 6px rgba(251,192,45,.3);
}
.btn-secondary:hover {
    background: var(--secondary-dark);
    box-shadow: 0 4px 12px rgba(251,192,45,.4);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
    box-shadow: none;
}
.btn-outline:hover {
    background: var(--primary);
    color: #fff;
}

.btn-sm { padding: 0.45rem 1rem; font-size: 0.85rem; }
.btn-lg { padding: 0.85rem 2rem; font-size: 1.05rem; border-radius: 10px; }
.btn-full { width: 100%; }

/* ── Forms ───────────────────────────────────────────────────────── */
form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}
@media (max-width: 600px) { form { grid-template-columns: 1fr; } }

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}
.form-group.full-width { grid-column: span 2; }
@media (max-width: 600px) { .form-group.full-width { grid-column: span 1; } }

label {
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--primary-dark);
    letter-spacing: 0.02em;
}

input, select, textarea {
    padding: 0.65rem 0.9rem;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.95rem;
    background: var(--surface-2);
    color: var(--text);
    transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}
input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(46,125,50,.12);
}
input::placeholder, textarea::placeholder { color: var(--text-light); }

/* ── Result / Output Box ─────────────────────────────────────────── */
.result-box {
    background: #edf7ee;
    border-left: 4px solid var(--primary);
    padding: 1.25rem 1.5rem;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    margin-top: 1.5rem;
    font-size: 0.95rem;
    line-height: 1.7;
}

.risk-high    { background: var(--danger-light);  border-left-color: var(--danger);  color: var(--danger); }
.risk-medium  { background: var(--warning-light); border-left-color: var(--warning); color: var(--warning); }
.risk-low     { background: #edf7ee;              border-left-color: var(--primary); color: var(--primary-dark); }

/* ── Pre / Code ──────────────────────────────────────────────────── */
pre {
    background: var(--surface-2);
    border: 1px solid var(--border);
    padding: 1.1rem 1.3rem;
    border-radius: var(--radius-sm);
    white-space: pre-wrap;
    word-break: break-word;
    font-family: 'Outfit', monospace;
    font-size: 0.9rem;
    line-height: 1.7;
    color: var(--text);
}

/* ── Hero (home page) ────────────────────────────────────────────── */
.hero {
    text-align: center;
    padding: 4.5rem 1rem 3rem;
}
.hero h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    color: var(--primary-dark);
    margin-bottom: 1rem;
    line-height: 1.15;
}
.hero h1 span { color: var(--primary-light); }
.hero p {
    font-size: 1.1rem;
    max-width: 580px;
    margin: 0 auto 2rem;
    color: var(--text-muted);
}
.hero-badges {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-bottom: 2.25rem;
}
.badge {
    background: rgba(46,125,50,.1);
    color: var(--primary-dark);
    padding: 0.3rem 0.85rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    border: 1px solid rgba(46,125,50,.2);
}

/* ── Features Grid ───────────────────────────────────────────────── */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.25rem;
    margin-top: 0.5rem;
}
.feature-card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 1.6rem;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition), box-shadow var(--transition);
}
.feature-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}
.feature-card .icon { font-size: 2rem; margin-bottom: 0.75rem; display: block; }
.feature-card h3 { font-size: 1rem; margin-bottom: 0.4rem; }
.feature-card p { font-size: 0.875rem; margin: 0; line-height: 1.55; }

/* ── Auth cards (login / signup) ─────────────────────────────────── */
.auth-wrapper {
    max-width: 420px;
    margin: 3rem auto;
}
.auth-wrapper form {
    grid-template-columns: 1fr;
    gap: 1rem;
}
.auth-wrapper .form-group.full-width { grid-column: span 1; }

/* ── Data / Stat badges inline ───────────────────────────────────── */
.stat-row {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 1.25rem;
}
.stat-chip {
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.45rem 0.9rem;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 0.35rem;
}
.stat-chip strong { color: var(--primary-dark); }

/* ── Alert / Flash ───────────────────────────────────────────────── */
.alert {
    padding: 0.85rem 1.1rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 1.25rem;
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
}
.alert-danger  { background: var(--danger-light);  color: var(--danger);  border-left: 3px solid var(--danger); }
.alert-warning { background: var(--warning-light); color: var(--warning); border-left: 3px solid var(--warning); }
.alert-success { background: #e8f5e9; color: var(--primary-dark); border-left: 3px solid var(--primary); }

/* ── Divider ─────────────────────────────────────────────────────── */
.divider {
    border: none;
    border-top: 1.5px solid var(--border);
    margin: 1.5rem 0;
}

/* ── Scrollbar ───────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--primary-light); border-radius: 10px; }

/* ── Utility ─────────────────────────────────────────────────────── */
.text-center { text-align: center; }
.text-muted  { color: var(--text-muted); font-size: 0.88rem; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-2 { margin-bottom: 1rem; }
.gap-1 { gap: 0.5rem; }
.flex { display: flex; }
.items-center { align-items: center; }

/* ── Responsive ──────────────────────────────────────────────────── */
@media (max-width: 768px) {
    .container { margin: 1.5rem auto; }
    .card { padding: 1.35rem; }
    .hero { padding: 3rem 1rem 2rem; }
    .navbar { padding: 0 1rem; }
    .nav-links { gap: 0; }
    .nav-links a { padding: 0.3rem 0.55rem; font-size: 0.78rem; }
}