/* ============================================
   ATLAS DE PLANTAS - Estilos generales
   Estilo: Natural/botánico, cálido
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,700;1,400&family=Lato:wght@300;400;700&display=swap');

/* Variables de color */
:root {
    --verde-oscuro:  #2d5016;
    --verde-medio:   #4a7c2f;
    --verde-claro:   #7ab648;
    --verde-suave:   #e8f5d9;
    --tierra:        #8b5e3c;
    --crema:         #faf6f0;
    --crema-oscuro:  #f0e8d8;
    --texto:         #2c2c2c;
    --texto-suave:   #666666;
    --blanco:        #ffffff;
}

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

body {
    font-family: 'Lato', sans-serif;
    background-color: var(--crema);
    color: var(--texto);
    line-height: 1.7;
}

/* ---- NAVEGACIÓN ---- */
nav {
    background-color: var(--verde-oscuro);
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.nav-logo {
    font-family: 'Playfair Display', serif;
    font-size: 1.4rem;
    color: var(--crema);
    text-decoration: none;
    padding: 1rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-logo span {
    font-size: 1.6rem;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 0.5rem;
}

.nav-links a {
    color: var(--verde-suave);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-size: 0.95rem;
    transition: background 0.2s, color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
    background-color: var(--verde-medio);
    color: var(--blanco);
}

/* ---- HERO (banner principal) ---- */
.hero {
    background: linear-gradient(135deg, var(--verde-oscuro) 0%, var(--verde-medio) 100%);
    color: var(--blanco);
    padding: 5rem 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: "🌿";
    font-size: 20rem;
    position: absolute;
    opacity: 0.05;
    top: -3rem;
    right: -3rem;
}

.hero h1 {
    font-family: 'Playfair Display', serif;
    font-size: 3rem;
    margin-bottom: 1rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.hero p {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto 2rem;
    opacity: 0.9;
}

.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 700;
    transition: transform 0.2s, box-shadow 0.2s;
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.btn-primario {
    background-color: var(--verde-claro);
    color: var(--blanco);
}

.btn-secundario {
    background-color: transparent;
    color: var(--blanco);
    border: 2px solid var(--blanco);
    margin-left: 1rem;
}

/* ---- SECCIONES GENERALES ---- */
.seccion {
    padding: 4rem 2rem;
    max-width: 1100px;
    margin: 0 auto;
}

.seccion-titulo {
    font-family: 'Playfair Display', serif;
    font-size: 2rem;
    color: var(--verde-oscuro);
    margin-bottom: 0.5rem;
}

.seccion-subtitulo {
    color: var(--texto-suave);
    margin-bottom: 2.5rem;
    font-size: 1.05rem;
}

.separador {
    width: 60px;
    height: 4px;
    background: var(--verde-claro);
    margin: 0.8rem 0 2rem;
    border-radius: 2px;
}

/* ---- TARJETAS DE PLANTAS ---- */
.grid-plantas {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1.5rem;
}

.tarjeta-planta {
    background: var(--blanco);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    transition: transform 0.2s, box-shadow 0.2s;
    text-decoration: none;
    color: var(--texto);
    display: block;
}

.tarjeta-planta:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}

.tarjeta-imagen {
    width: 100%;
    height: 180px;
    object-fit: cover;
    background-color: var(--verde-suave);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
}

.tarjeta-cuerpo {
    padding: 1.2rem;
}

.tarjeta-nombre-comun {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--verde-oscuro);
    margin-bottom: 0.2rem;
}

.tarjeta-nombre-cientifico {
    font-style: italic;
    color: var(--texto-suave);
    font-size: 0.9rem;
    margin-bottom: 0.8rem;
}

.tarjeta-familia {
    font-size: 0.82rem;
    background: var(--verde-suave);
    color: var(--verde-medio);
    padding: 0.2rem 0.7rem;
    border-radius: 20px;
    display: inline-block;
    font-weight: 700;
}

/* ---- BUSCADOR ---- */
.buscador-contenedor {
    background: var(--blanco);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    margin-bottom: 2rem;
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    align-items: center;
}

.buscador-input {
    flex: 1;
    min-width: 200px;
    padding: 0.7rem 1rem;
    border: 2px solid var(--crema-oscuro);
    border-radius: 8px;
    font-size: 1rem;
    font-family: 'Lato', sans-serif;
    transition: border-color 0.2s;
}

.buscador-input:focus {
    outline: none;
    border-color: var(--verde-claro);
}

/* ---- FICHA DE PLANTA ---- */
.ficha-header {
    background: linear-gradient(135deg, var(--verde-oscuro), var(--verde-medio));
    color: var(--blanco);
    padding: 3rem 2rem;
}

.ficha-nombre-comun {
    font-family: 'Playfair Display', serif;
    font-size: 2.5rem;
}

.ficha-nombre-cientifico {
    font-style: italic;
    font-size: 1.3rem;
    opacity: 0.85;
    margin-top: 0.3rem;
}

.ficha-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    margin-top: 2rem;
}

.ficha-seccion {
    background: var(--blanco);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    margin-bottom: 1.5rem;
}

.ficha-seccion h3 {
    font-family: 'Playfair Display', serif;
    color: var(--verde-oscuro);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--verde-suave);
}

.taxonomia-tabla {
    width: 100%;
    border-collapse: collapse;
}

.taxonomia-tabla tr:nth-child(even) {
    background: var(--crema);
}

.taxonomia-tabla td {
    padding: 0.5rem 0.8rem;
    font-size: 0.95rem;
}

.taxonomia-tabla td:first-child {
    font-weight: 700;
    color: var(--verde-medio);
    width: 40%;
}

/* ---- FOOTER ---- */
footer {
    background-color: var(--verde-oscuro);
    color: var(--verde-suave);
    text-align: center;
    padding: 2rem;
    margin-top: 4rem;
    font-size: 0.9rem;
}

footer a {
    color: var(--verde-claro);
    text-decoration: none;
}

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
    .hero h1 { font-size: 2rem; }
    .ficha-grid { grid-template-columns: 1fr; }
    .nav-links { display: none; }
}