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

:root {
    --green-hero:    #1b5e20;  /* header / hero bg — rich saturated deep green */
    --green-dark:    #2e7d32;  /* primary buttons, links */
    --green-mid:     #43a047;  /* hover states */
    --green-vivid:   #66bb6a;  /* accents, badges, tags */
    --green-light:   #a5d6a7;  /* soft accents, borders */
    --green-pale:    #e8f5e9;  /* card backgrounds, tinted areas */
    --yellow-accent: #f9a825;  /* warm pop accent for CTAs, badges */
    --bg:            #fffef9;  /* page background — bright warm white */
    --white:         #ffffff;
    --text:          #1a1a1a;  /* near-black, high contrast */
    --text-muted:    #4a6b4a;
    --border:        #c8e6c9;
    --red:           #c62828;

    --font-display: 'Georgia', 'Times New Roman', serif;
    --font-body:    system-ui, -apple-system, 'Segoe UI', sans-serif;
    --radius:       8px;
    --shadow:       0 2px 12px rgba(30,94,32,.10);
    --shadow-lg:    0 8px 32px rgba(30,94,32,.18);
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    background: var(--bg);
    color: var(--text);
    line-height: 1.65;
    font-size: 1rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a { color: var(--green-dark); text-decoration: none; }
a:hover { color: var(--green-mid); }

img { max-width: 100%; display: block; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.25rem;
}

/* ── Flash ────────────────────────────────────────── */
.flash {
    padding: .75rem 1.25rem;
    text-align: center;
    font-size: .9rem;
    font-weight: 500;
}
.flash--success { background: #e8f5e9; color: #1b5e20; border-bottom: 2px solid var(--green-vivid); }
.flash--error   { background: #ffebee; color: var(--red); border-bottom: 2px solid var(--red); }
.flash--info    { background: #e3f2fd; color: #0d47a1; border-bottom: 2px solid #42a5f5; }

/* ── Header ───────────────────────────────────────── */
.site-header {
    background: var(--green-hero);
    color: #fff;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0,0,0,.20);
}
.site-header .container {
    display: flex;
    align-items: center;
    gap: 2rem;
    height: 66px;
}

.site-logo {
    display: flex;
    align-items: center;
    gap: .5rem;
    font-family: var(--font-display);
    font-size: 1.2rem;
    color: #ffffff;
    white-space: nowrap;
    letter-spacing: .01em;
}
.site-logo:hover { color: var(--green-light); }

.site-nav {
    display: flex;
    gap: 1.75rem;
    flex: 1;
}
.site-nav a {
    color: #a5d6a7;
    font-size: .9rem;
    font-weight: 500;
    letter-spacing: .02em;
    transition: color .18s;
}
.site-nav a:hover { color: #ffffff; }

.site-header__actions {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}
.header-icon {
    color: #a5d6a7;
    font-size: 1.2rem;
    position: relative;
    transition: color .18s;
}
.header-icon:hover { color: #ffffff; }

.cart-badge {
    position: absolute;
    top: -7px; right: -9px;
    background: var(--yellow-accent);
    color: #000;
    font-size: .62rem;
    font-weight: 700;
    width: 17px; height: 17px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-toggle { display: none; background: none; border: none; color: #a5d6a7; font-size: 1.5rem; cursor: pointer; padding: .25rem .5rem; }

/* ── Hero ─────────────────────────────────────────── */
.hero {
    background: linear-gradient(135deg, var(--green-hero) 0%, #2e7d32 60%, #388e3c 100%);
    color: #fff;
    padding: 5rem 0 4rem;
    text-align: center;
}
.hero h1 {
    font-family: var(--font-display);
    font-size: clamp(2.4rem, 6vw, 4.2rem);
    color: #ffffff;
    line-height: 1.1;
    margin-bottom: 1rem;
    text-shadow: 0 2px 8px rgba(0,0,0,.2);
}
.hero p {
    font-size: 1.15rem;
    color: #c8e6c9;
    max-width: 520px;
    margin: 0 auto 2.25rem;
    line-height: 1.7;
}

/* ── Buttons ──────────────────────────────────────── */
.btn {
    display: inline-block;
    padding: .7rem 1.6rem;
    border-radius: var(--radius);
    font-size: .9rem;
    font-weight: 600;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all .18s;
    text-align: center;
    letter-spacing: .02em;
}
.btn-primary {
    background: var(--green-dark);
    color: #fff;
    border-color: var(--green-dark);
}
.btn-primary:hover { background: var(--green-mid); border-color: var(--green-mid); color: #fff; }

.btn-accent {
    background: var(--yellow-accent);
    color: #1a1a1a;
    border-color: var(--yellow-accent);
}
.btn-accent:hover { background: #f57f17; border-color: #f57f17; color: #fff; }

.btn-outline {
    background: transparent;
    color: var(--green-dark);
    border-color: var(--green-dark);
}
.btn-outline:hover { background: var(--green-dark); color: #fff; }

.btn-white {
    background: #fff;
    color: var(--green-hero);
    border-color: #fff;
    font-weight: 700;
}
.btn-white:hover { background: var(--green-pale); color: var(--green-dark); }

.btn-sm  { padding: .4rem 1rem; font-size: .8rem; }
.btn-lg  { padding: .9rem 2.2rem; font-size: 1rem; }
.btn-danger { background: var(--red); border-color: var(--red); color: #fff; }
.btn-danger:hover { background: #b71c1c; border-color: #b71c1c; }

/* ── Sections ─────────────────────────────────────── */
.section { padding: 3.5rem 0; }
.section--tinted { background: var(--green-pale); }

.section-header { margin-bottom: 2rem; }
.section-title {
    font-family: var(--font-display);
    font-size: 1.75rem;
    color: var(--green-hero);
    margin-bottom: .25rem;
}
.section-sub {
    color: var(--text-muted);
    font-size: .95rem;
}
.section-header-row {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2rem;
}

/* ── Plant Cards ──────────────────────────────────── */
.plant-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 1.5rem;
}

.plant-card {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform .2s, box-shadow .2s;
    border: 1px solid var(--border);
}
.plant-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }

.plant-card__img {
    aspect-ratio: 4/3;
    background: var(--green-pale);
    overflow: hidden;
}
.plant-card__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .35s; }
.plant-card:hover .plant-card__img img { transform: scale(1.04); }
.plant-card__img--placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3.5rem;
}

.plant-card__body {
    padding: 1rem 1rem .75rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.plant-card__name { font-size: 1rem; font-weight: 700; color: var(--text); line-height: 1.3; }
.plant-card__botanical { font-size: .8rem; color: var(--text-muted); font-style: italic; margin-top: .15rem; }

.plant-card__tags { display: flex; gap: .35rem; flex-wrap: wrap; margin: .5rem 0; }
.tag {
    font-size: .68rem;
    padding: .18rem .5rem;
    border-radius: 20px;
    background: var(--green-pale);
    color: var(--green-dark);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .05em;
}
.tag--rare { background: #fff8e1; color: #e65100; }
.tag--pet  { background: #e3f2fd; color: #1565c0; }
.tag--easy { background: #e8f5e9; color: #2e7d32; }

.plant-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: auto;
    padding-top: .75rem;
    border-top: 1px solid var(--green-pale);
}
.plant-card__price { font-size: 1.1rem; font-weight: 700; color: var(--green-dark); }
.plant-card__compare { text-decoration: line-through; color: var(--text-muted); font-size: .85rem; margin-left: .3rem; }

/* ── Subscription Tiers ───────────────────────────── */
.tier-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}
.tier-card {
    background: var(--white);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    text-align: center;
    transition: border-color .2s, box-shadow .2s;
}
.tier-card:hover { border-color: var(--green-vivid); box-shadow: var(--shadow); }
.tier-card--featured { border-color: var(--green-dark); box-shadow: var(--shadow); }
.tier-card--featured .tier-card__badge {
    display: inline-block;
    background: var(--yellow-accent);
    color: #1a1a1a;
    font-size: .72rem;
    font-weight: 700;
    padding: .2rem .7rem;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: .05em;
    margin-bottom: .75rem;
}
.tier-card__name { font-family: var(--font-display); font-size: 1.4rem; color: var(--green-hero); }
.tier-card__price { font-size: 2.4rem; font-weight: 700; color: var(--green-dark); margin: .5rem 0 .25rem; line-height: 1; }
.tier-card__price span { font-size: 1rem; color: var(--text-muted); font-weight: 400; }
.tier-card__desc { color: var(--text-muted); font-size: .9rem; margin-bottom: 1.25rem; }
.tier-card ul { text-align: left; list-style: none; margin-bottom: 1.5rem; }
.tier-card ul li { padding: .35rem 0; font-size: .9rem; color: var(--text); border-bottom: 1px solid var(--green-pale); }
.tier-card ul li::before { content: "✓ "; color: var(--green-vivid); font-weight: 700; }

/* ── Forms ────────────────────────────────────────── */
.form-group { margin-bottom: 1.25rem; }
.form-group label {
    display: block;
    font-size: .85rem;
    font-weight: 600;
    margin-bottom: .35rem;
    color: var(--text);
}
.form-control {
    width: 100%;
    padding: .65rem 1rem;
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    font-size: .95rem;
    font-family: var(--font-body);
    background: var(--white);
    color: var(--text);
    transition: border-color .18s, box-shadow .18s;
}
.form-control:focus {
    outline: none;
    border-color: var(--green-dark);
    box-shadow: 0 0 0 3px rgba(67,160,71,.15);
}
select.form-control { cursor: pointer; }
textarea.form-control { resize: vertical; min-height: 100px; }

.form-hint { font-size: .8rem; color: var(--text-muted); margin-top: .25rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

/* ── Cart ─────────────────────────────────────────── */
.cart-table { width: 100%; border-collapse: collapse; }
.cart-table th {
    text-align: left;
    padding: .75rem .5rem;
    border-bottom: 2px solid var(--border);
    font-size: .82rem;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--text-muted);
}
.cart-table td { padding: .9rem .5rem; border-bottom: 1px solid var(--green-pale); vertical-align: middle; }
.cart-total { text-align: right; font-size: 1.2rem; font-weight: 700; padding: 1.25rem 0; color: var(--green-hero); }

/* ── Empty states ─────────────────────────────────── */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-muted);
}
.empty-state .empty-icon { font-size: 3.5rem; margin-bottom: 1rem; }
.empty-state h2 { font-family: var(--font-display); color: var(--green-dark); margin-bottom: .5rem; }

/* ── Footer ───────────────────────────────────────── */
.site-footer {
    background: var(--green-hero);
    color: #a5d6a7;
    padding: 3rem 0 1.5rem;
    margin-top: auto;
    font-size: .9rem;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 2.5rem;
    margin-bottom: 2.5rem;
}
.site-footer strong { color: #ffffff; display: block; margin-bottom: .75rem; font-size: 1rem; }
.site-footer p { color: #81c784; line-height: 1.65; }
.site-footer ul { list-style: none; }
.site-footer ul li { margin-bottom: .4rem; }
.site-footer a { color: #a5d6a7; transition: color .18s; }
.site-footer a:hover { color: #ffffff; }
.footer-bottom a { display: inline-block; padding: .3rem .1rem; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.1);
    padding-top: 1.25rem;
    color: #66a66a;
    font-size: .82rem;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: .5rem;
}

/* ── Home split (AI advisor + identifier) ─────────── */
.home-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

/* ── Responsive ───────────────────────────────────── */
@media (max-width: 768px) {
    .site-nav { display: none; }
    .site-nav.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 66px; left: 0; right: 0;
        background: var(--green-hero);
        padding: 1rem 1.25rem;
        gap: 1rem;
        box-shadow: 0 6px 16px rgba(0,0,0,.2);
        z-index: 200;
    }
    .nav-toggle { display: block; }
    .site-header .container { gap: 1rem; }
    .site-header__actions { margin-left: auto; }
    .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
    .form-row { grid-template-columns: 1fr; }
    .hero { padding: 3rem 0 2.5rem; }
    .tier-grid { grid-template-columns: 1fr; }
    .home-split { grid-template-columns: 1fr; gap: 1.5rem; }
}