:root {
    --bg: #f4f7f2;
    --surface: #ffffff;
    --surface-soft: #eef3e8;
    --text: #2f3a33;
    --text-soft: #55635b;
    --primary: #5f7d62;
    --primary-dark: #44594b;
    --primary-light: #cfe0c2;
    --accent: #a8c48c;
    --shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.08);
    --shadow-soft: 0 0.25rem 0.75rem rgba(0, 0, 0, 0.08);
    --radius: 1rem;
    --radius-sm: 0.75rem;
    --sidebar-width: 11rem;
    --transition: 0.3s ease;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(to bottom, #f8faf6, #eef3ea);
    color: var(--text);
    margin: 0;
    padding: 0;
    line-height: 1.7;
}

/* Main Layout */
.main-content {
    margin-left: calc(var(--sidebar-width) + 1.5rem);
    padding: 2rem 2rem 3rem;
    max-width: 90rem;
}

/* Title */
.static-title {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 700;
    color: var(--text);
    background: linear-gradient(135deg, #dfead6, #cfe0c2);
    padding: 1.25rem 2.5rem;
    text-align: center;
    border-left: 0.5rem solid var(--primary);
    border-bottom: 0.3125rem solid #b7cda8;
    border-radius: 1rem 0 1rem 0;
    box-shadow: var(--shadow);
    margin: 4rem 0 2rem calc(var(--sidebar-width) + 2rem);
    width: fit-content;
    max-width: calc(100% - 2rem);
    transition: transform var(--transition), box-shadow var(--transition);
}

.static-title:hover {
    transform: translateY(-0.125rem);
    box-shadow: 0 0.75rem 1.75rem rgba(0, 0, 0, 0.12);
}

/* Sidebar */
.sidebar {
    background: linear-gradient(to bottom, #4b5b51, #3f4d45);
    width: var(--sidebar-width);
    height: 100vh;
    top: 0;
    left: 0;
    position: fixed;
    padding: 2rem 0.75rem;
    z-index: 1000;
    box-shadow: 0.25rem 0 1rem rgba(0, 0, 0, 0.08);
}

.sidebar nav {
    margin-top: 2.5rem;
}

.sidebar ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar ul li {
    margin-bottom: 0.75rem;
}

.sidebar ul li a {
    color: #f3f7f0;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    padding: 0.75rem 0.85rem;
    display: block;
    border-radius: 0.65rem;
    transition: background-color var(--transition), color var(--transition), transform var(--transition);
}

.sidebar ul li a:hover {
    background-color: rgba(207, 224, 194, 0.95);
    color: #1f2b22;
    transform: translateX(0.2rem);
}

.sidebar ul li a.active {
    background-color: var(--primary-light);
    color: #1f2b22;
    font-weight: 700;
    border-left: 0.25rem solid #2e4a34;
    padding-left: 0.9rem;
}

/* Sections */
.section {
    background-color: var(--surface);
    padding: 1.6rem;
    margin-bottom: 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(95, 125, 98, 0.08);
    opacity: 0;
    transform: translateY(1.25rem);
    transition: opacity 0.6s ease, transform 0.6s ease, box-shadow var(--transition);
}

.section:hover {
    box-shadow: var(--shadow);
}

.section.visible {
    opacity: 1;
    transform: translateY(0);
}

.section h1 {
    margin-top: 0;
    margin-bottom: 1.2rem;
    font-size: clamp(1.6rem, 2.5vw, 2rem);
    color: var(--primary-dark);
    border-bottom: 0.2rem solid #d8e4cf;
    padding-bottom: 0.5rem;
}

/* Content Cards */
.content-wrapper {
    display: flex;
    background-color: var(--surface-soft);
    padding: 1rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: nowrap;
    border: 1px solid rgba(95, 125, 98, 0.08);
    transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition);
}

.content-wrapper:hover {
    transform: translateY(-0.125rem);
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.06);
    background-color: #f3f7ef;
}

.content-wrapper:nth-of-type(even) {
    flex-direction: row-reverse;
}

/* Text */
.text-content,
.text-content2 {
    flex: 1;
    font-size: 1.15rem;   /* más grande */
    line-height: 1.85;    /* un poco más aire */
    color: #2b2f2c;       /* más oscuro */
}

.text-content p,
.text-content2 p {
    margin-top: 0;
    margin-bottom: 1rem;
}

.text-content2 {
    text-align: center;
}

/* Images */
.image-content {
    flex-shrink: 0;
}

.image-content img {
    width: 100%;
    max-width: 22rem;
    height: auto;
    object-fit: contain;
    border-radius: 0.9rem;
    display: block;
    box-shadow: 0 0.4rem 1rem rgba(0, 0, 0, 0.12);
    transition: transform var(--transition), box-shadow var(--transition);
}

.image-content img:hover,
.imagegif-content img:hover,
.wide-image img:hover {
    transform: scale(1.02);
    box-shadow: 0 0.75rem 1.5rem rgba(0, 0, 0, 0.14);
}

.imagegif-content {
    width: 100%;
    text-align: center;
}

.imagegif-content img {
    width: min(100%, 34rem);
    height: auto;
    border-radius: 1rem;
    display: inline-block;
    box-shadow: 0 0.4rem 1rem rgba(0, 0, 0, 0.12);
    transition: transform var(--transition), box-shadow var(--transition);
}

.wide-image {
    width: 100%;
    text-align: center;
}

.wide-image img {
    width: 100%;
    max-width: 70rem;
    height: auto;
    border-radius: 0.85rem;
    margin-top: 0.75rem;
    box-shadow: 0 0.4rem 1rem rgba(0, 0, 0, 0.1);
    transition: transform var(--transition), box-shadow var(--transition);
}

/* Back button */
.back-to-main {
    display: flex;
    justify-content: flex-end;
    margin-top: 0.5rem;
    z-index: 9999;
}

.back-button {
    background: rgba(63, 77, 69, 0.92);
    color: #fff;
    position: fixed;
    top: 1rem;
    right: 1rem;
    padding: 0.7rem 1.2rem;
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: 999px;
    box-shadow: 0 0.4rem 1rem rgba(0, 0, 0, 0.16);
    transition: background-color var(--transition), transform 0.2s ease, opacity var(--transition);
    opacity: 0.95;
    z-index: 99999;
}

.back-button:hover {
    background-color: #243128;
    transform: translateY(-0.125rem);
}

.back-button:active {
    transform: translateY(0.0625rem);
}

/* Status tags */
.status {
    font-weight: 600;
    padding: 0.2rem 0.55rem;
    border-radius: 0.45rem;
    text-decoration: none;
    transition: background-color var(--transition), transform var(--transition);
    display: inline-block;
}

.status:hover {
    transform: translateY(-0.0625rem);
}

.near-threatened {
    color: #3e3200;
    border: 0.125rem solid #d6b500;
    background-color: #fff4b8;
}

.near-threatened:hover {
    background-color: #ffe978;
}

.vulnerable {
    color: #4a1111;
    border: 0.125rem solid #cf4a4a;
    background-color: #ffd6d6;
}

.vulnerable:hover {
    background-color: #ffb8b8;
}

/* Optional scroll progress bar */
#scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 0.3rem;
    width: 0;
    background: linear-gradient(to right, #7fa66a, #bfd7a8);
    z-index: 100000;
    transition: width 0.1s linear;
}

/* Links inside text */
a {
    color: #41644a;
}

a:hover {
    color: #2c4733;
}

/* Responsive */
@media (max-width: 64rem) {
    .main-content {
        margin-left: 0;
        padding: 6rem 1.25rem 2rem;
    }

    .sidebar {
        display: none;
    }

    .static-title {
        margin: 5rem auto 2rem;
        font-size: 2rem;
        padding: 1rem 1.5rem;
        width: min(92%, 48rem);
    }
}

@media (max-width: 48rem) {
    .content-wrapper,
    .content-wrapper:nth-of-type(even) {
        flex-direction: column;
        align-items: stretch;
    }

    .text-content,
    .text-content2 {
        font-size: 1rem;
    }

    .image-content {
        display: flex;
        justify-content: center;
    }

    .image-content img {
        width: 100%;
        max-width: 22rem;
        height: auto;
    }

    .imagegif-content img,
    .wide-image img {
        max-width: 100%;
        height: auto;
    }

    .section {
        padding: 1.2rem;
    }

    .section h1 {
        font-size: 1.45rem;
    }

    .back-button {
        top: 0.75rem;
        right: 0.75rem;
        padding: 0.65rem 1rem;
        font-size: 0.9rem;
    }
}

.vulnerable:hover {
    background-color: #ef9a9a;
}