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

:root {
    --azul-marino: #1a4d6d;
    --azul-oscuro: #0f3550;
    --dorado: #d4a036;
    --celeste: #5dade2;
    --blanco: #ffffff;
    --gris-claro: #f8f9fa;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: var(--gris-claro);
}

/* Header */
header {
    background: var(--azul-marino);
    color: white;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-container img {
    height: 60px;
    width: 60px;
    object-fit: contain;
    border-radius: 50%;
}

.logo-text {
    font-size: 1.3rem;
    font-weight: bold;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
    align-items: center;
}

.nav-links a {
    color: white;
    text-decoration: none;
    transition: color 0.3s;
    font-weight: 500;
}

.nav-links a:hover {
    color: var(--dorado);
}

/* Hero Banner */
.hero-banner {
    background: linear-gradient(135deg, var(--azul-marino) 0%, var(--azul-oscuro) 100%);
    color: white;
    padding: 3rem 2rem;
    text-align: center;
}

.hero-banner h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.hero-banner p {
    font-size: 1.2rem;
    opacity: 0.95;
}

/* Main Container */
.donation-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

.donation-wrapper {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: 3rem;
    align-items: start;
}

/* Left Column - Info */
.donation-info-column {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.info-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.info-card h2 {
    color: var(--azul-marino);
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.info-card p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.impact-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.impact-item-small {
    display: flex;
    align-items: start;
    gap: 1rem;
    padding: 1rem;
    background: var(--gris-claro);
    border-radius: 10px;
    transition: all 0.3s;
}

.impact-item-small:hover {
    transform: translateX(5px);
    background: #e8f4f8;
}

.impact-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.impact-item-small h4 {
    color: var(--azul-marino);
    margin-bottom: 0.3rem;
    font-size: 1.1rem;
}

.impact-item-small p {
    font-size: 0.9rem;
    color: #666;
    margin: 0;
}

.secure-info {
    background: linear-gradient(135deg, #e8f4f8 0%, #f0f8ff 100%);
    border: 2px solid var(--celeste);
}

.secure-info h3 {
    color: var(--azul-marino);
    margin-bottom: 0.5rem;
}

.payment-logo {
    text-align: center;
}

/* Right Column - Form */
.donation-form-card {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.donation-form-card > h2 {
    color: var(--azul-marino);
    font-size: 2rem;
    margin-bottom: 2rem;
    text-align: center;
}

/* Donation Type Selector */
.donation-type-selector {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 2.5rem;
}

.type-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.5rem;
    background: white;
    border: 3px solid #e0e0e0;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 1rem;
    font-weight: 600;
}

.type-btn:hover {
    border-color: var(--celeste);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(93, 173, 226, 0.2);
}

.type-btn.active {
    border-color: var(--dorado);
    background: linear-gradient(135deg, #fff9e6 0%, #ffffff 100%);
    box-shadow: 0 5px 20px rgba(212, 160, 54, 0.3);
}

.type-icon {
    font-size: 2.5rem;
}

.type-text {
    color: var(--azul-marino);
}

/* Donation Content */
.donation-content {
    display: none;
}

.donation-content.active {
    display: block;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.form-section h3 {
    color: var(--azul-marino);
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--gris-claro);
}

/* Form Groups */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    color: var(--azul-marino);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.9rem;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--celeste);
    box-shadow: 0 0 0 3px rgba(93, 173, 226, 0.1);
}

.form-group small {
    display: block;
    margin-top: 0.3rem;
    color: #999;
    font-size: 0.85rem;
}

/* Monthly Plans */
.monthly-plans {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.plan-card {
    position: relative;
    background: white;
    border: 3px solid #e0e0e0;
    border-radius: 15px;
    padding: 2rem 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
}

.plan-card:hover {
    border-color: var(--celeste);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.plan-card.featured {
    border-color: var(--dorado);
    background: linear-gradient(135deg, #fff9e6 0%, #ffffff 100%);
    box-shadow: 0 10px 30px rgba(212, 160, 54, 0.2);
}

.plan-card.selected {
    border-color: var(--azul-marino);
    background: linear-gradient(135deg, #e8f4f8 0%, #ffffff 100%);
    box-shadow: 0 10px 30px rgba(26, 77, 109, 0.3);
}

.plan-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--dorado);
    color: var(--azul-marino);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: bold;
    box-shadow: 0 3px 10px rgba(212, 160, 54, 0.3);
}

.plan-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.plan-card h4 {
    color: var(--azul-marino);
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.plan-amount {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--dorado);
    margin: 0.5rem 0;
}

.plan-period {
    color: #999;
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

.plan-benefits {
    list-style: none;
    text-align: left;
    margin: 1.5rem 0;
    padding: 0;
}

.plan-benefits li {
    padding: 0.5rem 0;
    color: #666;
    font-size: 0.9rem;
}

.plan-btn {
    width: 100%;
    padding: 0.9rem;
    background: var(--azul-marino);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
}

.plan-btn:hover {
    background: var(--azul-oscuro);
    transform: scale(1.05);
}

.plan-card.selected .plan-btn {
    background: var(--dorado);
    color: var(--azul-marino);
}

/* Monthly Form Fields */
.monthly-form-fields {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 2px solid var(--gris-claro);
}

.selected-plan-summary {
    background: linear-gradient(135deg, #e8f4f8 0%, #f0f8ff 100%);
    padding: 1.5rem;
    border-radius: 10px;
    margin: 1.5rem 0;
    border-left: 4px solid var(--celeste);
}

.selected-plan-summary p {
    margin: 0.5rem 0;
    color: var(--azul-marino);
}

/* Submit Button */
.submit-donation-btn {
    width: 100%;
    padding: 1.2rem;
    background: var(--dorado);
    color: var(--azul-marino);
    border: none;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    box-shadow: 0 5px 20px rgba(212, 160, 54, 0.3);
}

.submit-donation-btn:hover {
    background: #e6b84d;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(212, 160, 54, 0.5);
}

.back-btn {
    width: 100%;
    padding: 0.9rem;
    background: transparent;
    color: var(--azul-marino);
    border: 2px solid var(--azul-marino);
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    margin-top: 1rem;
}

.back-btn:hover {
    background: var(--azul-marino);
    color: white;
}

/* Footer */
footer {
    background: var(--azul-oscuro);
    color: white;
    text-align: center;
    padding: 3rem 2rem;
    margin-top: 4rem;
}

footer p {
    margin: 0.5rem 0;
}

.footer-accent {
    color: var(--dorado);
}

/* Responsive */
@media (max-width: 1024px) {
    .donation-wrapper {
        grid-template-columns: 1fr;
    }

    .donation-info-column {
        order: 2;
    }

    .donation-form-column {
        order: 1;
    }

    .monthly-plans {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hero-banner h1 {
        font-size: 2rem;
    }

    .donation-container {
        padding: 2rem 1rem;
    }

    .donation-form-card {
        padding: 1.5rem;
    }

    .donation-type-selector {
        grid-template-columns: 1fr;
    }

    .type-btn {
        flex-direction: row;
        justify-content: center;
    }

    .plan-card {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .hero-banner h1 {
        font-size: 1.6rem;
    }

    .donation-form-card > h2 {
        font-size: 1.5rem;
    }

    .plan-amount {
        font-size: 2rem;
    }
}

/* === Estilo unificado del menú === */
header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.1); /* transparencia */
    backdrop-filter: blur(6px);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

/* Contenedor del menú */
nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 60px;
}

/* Logo alineado a la izquierda */
.logo-container img {
    height: 60px;
    width: auto;
}

/* Enlaces centrados y estilo base */
.nav-links {
    list-style: none;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 28px;
    margin: 0;
}

.nav-links a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
}

/* Hover general */
.nav-links a:hover {
    color: #FFD700; /* dorado */
}

/* === Botón especial "Donaciones" === */
.nav-links a[href*="donaciones"] {
    background-color: #FFD700;  /* dorado */
    color: #333;
    padding: 10px 24px;
    border-radius: 6px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.nav-links a[href*="donaciones"]:hover {
    background-color: #e6c200; /* tono dorado más oscuro */
    transform: scale(1.05);
    color: #111;
}