:root {
    --blue-dark: #1f3b79;
    --blue: #18b7e6;
    --sky: #72d2f6;
    --lime: #b8d84a;
    --yellow: #f4d335;
    --orange: #f58a2c;
    --white: #ffffff;
    --text: #1d2a3d;
    --soft: #f5fbff;
    --border: rgba(31, 59, 121, 0.12);
    --shadow: 0 24px 60px rgba(31, 59, 121, 0.16);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: 'Nunito', sans-serif;
    color: var(--text);
    background: linear-gradient(180deg, #f9fdff 0%, #eef8ff 100%);
}
img { max-width: 100%; display: block; }
a { text-decoration: none; }
ul { padding-left: 1.2rem; }

.container {
    width: min(1120px, calc(100% - 2rem));
    margin: 0 auto;
}

.hero {
    position: relative;
    overflow: hidden;
    padding: 2rem 0 4rem;
    background:
        linear-gradient(135deg, rgba(24, 183, 230, 0.14), rgba(184, 216, 74, 0.15)),
        radial-gradient(circle at top left, rgba(244, 211, 53, 0.28), transparent 25%),
        #fafdff;
}
.overlay {
    position: absolute;
    inset: 0;
    background: url('../logo-referencia.jpeg') center/cover no-repeat;
    filter: blur(20px);
    opacity: 0.12;
    transform: scale(1.12);
}
.hero-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 2rem;
    align-items: center;
}
.hero-copy h1,
.section h2,
.login-card h1,
.admin-header h1 {
    font-family: 'Baloo 2', cursive;
    line-height: 1;
    margin: 0 0 1rem;
    color: var(--blue-dark);
}
.hero-copy h1 { font-size: clamp(2.5rem, 5vw, 4.8rem); }
.section h2 { font-size: clamp(2rem, 4vw, 3rem); }
.hero-copy p,
.section p,
.form-intro li,
.login-card p,
.admin-header p { font-size: 1.05rem; }
.badge,
.section-label {
    display: inline-flex;
    padding: .45rem .9rem;
    border-radius: 999px;
    background: rgba(31, 59, 121, 0.08);
    color: var(--blue-dark);
    font-weight: 800;
    letter-spacing: .02em;
    margin-bottom: 1rem;
}
.hero-actions,
.admin-actions {
    display: flex;
    gap: .85rem;
    flex-wrap: wrap;
    margin: 1.5rem 0 2rem;
}
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 16px;
    padding: .95rem 1.25rem;
    font-weight: 800;
    cursor: pointer;
    transition: .2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
    background: linear-gradient(135deg, var(--blue), var(--blue-dark));
    color: var(--white);
    box-shadow: var(--shadow);
}
.btn-secondary {
    background: var(--white);
    color: var(--blue-dark);
    border: 1px solid var(--border);
}
.btn-block { width: 100%; }
.hero-card,
.form-card,
.login-card,
.table-shell,
.mini-cards article,
.impact-card,
.empty-state {
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: 28px;
    box-shadow: var(--shadow);
}
.hero-card { padding: 1rem; }
.hero-card img { border-radius: 22px; }
.impact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}
.impact-card {
    padding: 1rem;
    text-align: center;
}
.impact-card span {
    font-size: 1.6rem;
    display: block;
    margin-bottom: .35rem;
}
.section { padding: 4.5rem 0; }
.two-col,
.form-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: start;
}
.mini-cards {
    display: grid;
    gap: 1rem;
}
.mini-cards article { padding: 1.3rem; }
.registration {
    background:
        linear-gradient(180deg, rgba(184,216,74,.1), rgba(24,183,230,.08));
}
.form-card,
.login-card { padding: 1.5rem; }
.registration-form .field-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}
.field.full { grid-column: 1 / -1; }
.field label {
    display: block;
    font-weight: 800;
    margin-bottom: .45rem;
    color: var(--blue-dark);
}
.field input,
.field select,
.field textarea {
    width: 100%;
    border-radius: 14px;
    border: 1px solid rgba(31, 59, 121, 0.18);
    padding: .95rem 1rem;
    font: inherit;
    background: #fff;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
    outline: 3px solid rgba(24, 183, 230, 0.18);
    border-color: var(--blue);
}
.alert {
    padding: 1rem 1.1rem;
    border-radius: 16px;
    margin-bottom: 1rem;
    font-weight: 700;
}
.alert.success {
    background: rgba(184, 216, 74, 0.18);
    color: #4c6300;
    border: 1px solid rgba(184, 216, 74, 0.35);
}
.alert.error {
    background: rgba(245, 138, 44, 0.12);
    color: #9a4d09;
    border: 1px solid rgba(245, 138, 44, 0.28);
}
.footer {
    padding: 1.2rem 0 2rem;
    background: var(--blue-dark);
    color: var(--white);
}
.footer-flex {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: center;
}
.footer a { color: #cfeeff; }
.admin-body {
    min-height: 100vh;
    background: linear-gradient(180deg, #f4fbff 0%, #edf8e5 100%);
}
.login-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 1.5rem;
}
.login-card { width: min(100%, 430px); }
.hint { display: block; margin-top: 1rem; color: #5f6d81; }
.admin-header {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: flex-end;
    padding: 2rem 1rem 1rem;
    width: min(1220px, calc(100% - 2rem));
    margin: 0 auto;
}
.admin-main {
    width: min(1220px, calc(100% - 2rem));
    margin: 0 auto 2rem;
}
.table-shell { overflow: auto; }
table {
    width: 100%;
    border-collapse: collapse;
    min-width: 980px;
}
th, td {
    padding: 1rem;
    border-bottom: 1px solid var(--border);
    text-align: left;
    vertical-align: top;
}
thead th {
    background: #f7fbff;
    color: var(--blue-dark);
    position: sticky;
    top: 0;
}
.empty-state {
    padding: 2rem;
    text-align: center;
    font-weight: 800;
}

@media (max-width: 900px) {
    .hero-grid,
    .two-col,
    .form-wrapper,
    .impact-grid,
    .registration-form .field-grid {
        grid-template-columns: 1fr;
    }
    .admin-header,
    .footer-flex {
        flex-direction: column;
        align-items: flex-start;
    }
}
.footer-links {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}
.thanks-note {
    text-align: center;
    margin-top: 16px;
}
.subhero {
    position: relative;
    padding: 2.5rem 0 2rem;
    background: linear-gradient(135deg, rgba(24, 183, 230, 0.12), rgba(184, 216, 74, 0.18));
}
.subhero-inner {
    display: grid;
    grid-template-columns: 1.1fr .9fr;
    gap: 2rem;
    align-items: center;
}
.gallery-hero-card { padding: .85rem; }
.gallery-layout {
    display: grid;
    grid-template-columns: .95fr 1.05fr;
    gap: 2rem;
    align-items: start;
}
.gallery-info-stack {
    display: grid;
    gap: 1rem;
}
.upload-card h2,
.gallery-heading h2 {
    margin-top: .45rem;
}
.upload-form {
    margin-top: 1rem;
}
input[type="file"] {
    width: 100%;
    border-radius: 14px;
    border: 1px dashed rgba(31, 59, 121, 0.28);
    padding: 1rem;
    background: #fff;
}
.upload-results ul {
    margin: .55rem 0 0;
}
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}
.gallery-item {
    background: rgba(255,255,255,.92);
    border: 1px solid var(--border);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow);
}
.gallery-item img {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    background: #eef6fb;
}
.gallery-meta {
    display: grid;
    gap: .3rem;
    padding: 1rem;
}
.gallery-meta small {
    color: #5f6d81;
}
.gallery-heading {
    margin-bottom: 1.25rem;
}
@media (max-width: 900px) {
    .hero-grid,
    .two-col,
    .form-wrapper,
    .subhero-inner,
    .gallery-layout {
        grid-template-columns: 1fr;
    }

    .impact-grid,
    .gallery-grid {
        grid-template-columns: 1fr 1fr;
    }
}
@media (max-width: 640px) {
    .registration-form .field-grid,
    .impact-grid,
    .gallery-grid {
        grid-template-columns: 1fr;
    }

    .footer-flex,
    .admin-header {
        flex-direction: column;
        align-items: flex-start;
    }
}