:root {
    --color-azul: #ACD2F1;
    --color-rojizo: #F1ACAF;
    --color-crema: #F1EEAC;
    --color-blanco: #FFFFFF;
    --color-texto: #1A2B3C;
    --color-gris: #6B7A8D;

    --shadow-soft: 0 4px 16px rgba(0,0,0,0.08);
    --shadow-premium: 0 12px 40px rgba(26, 43, 60, 0.12);
    --shadow-btn-hover: 0 8px 24px rgba(26, 43, 60, 0.14);
    --radius-btn: 10px;
    --radius-card: 12px;
    --radius-pill: 20px;

    --ease-premium: cubic-bezier(0.22, 1, 0.36, 1);
    --ease-out-soft: cubic-bezier(0.33, 1, 0.68, 1);
    --duration-fast: 0.22s;
    --duration-normal: 0.35s;
    --duration-slow: 0.5s;
}

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

body {
    font-family: 'Inter', sans-serif;
    color: var(--color-texto);
    background-color: var(--color-blanco);
    line-height: 1.6;
    overflow-x: hidden;
}

h1 { font-size: clamp(28px, 5vw, 48px); font-weight: 700; line-height: 1.2; }
h2 { font-size: clamp(22px, 3.5vw, 32px); font-weight: 600; }
h3 { font-size: clamp(18px, 2.5vw, 20px); font-weight: 600; }
p { font-size: 16px; }
small { font-size: 13px; color: var(--color-gris); }

.container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 clamp(20px, 4vw, 40px);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: var(--radius-btn);
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    border: none;
    font-size: 15px;
    white-space: nowrap;
    max-width: 100%;
    transition:
        transform var(--duration-fast) var(--ease-premium),
        box-shadow var(--duration-fast) var(--ease-premium),
        background-color var(--duration-fast) var(--ease-out-soft),
        border-color var(--duration-fast) var(--ease-out-soft),
        filter var(--duration-fast) var(--ease-out-soft);
}
.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-btn-hover);
}
.btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow-soft);
}
.btn:focus-visible {
    outline: 2px solid var(--color-azul);
    outline-offset: 2px;
}

.btn-primary {
    background-color: var(--color-azul);
    color: var(--color-texto);
}
.btn-primary:hover {
    filter: brightness(0.96);
    background-color: #9ec8ef;
}

.btn-secondary {
    background-color: var(--color-rojizo);
    color: var(--color-texto);
}
.btn-secondary:hover {
    filter: brightness(0.96);
    background-color: #e89ea2;
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--color-azul);
    color: var(--color-texto);
}
.btn-outline:hover {
    background-color: rgba(172, 210, 241, 0.18);
    border-color: #8bbde8;
}

.navbar {
    position: sticky;
    top: 0;
    min-height: 72px;
    height: auto;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-azul);
    display: flex;
    align-items: center;
    z-index: 1000;
    transition: box-shadow var(--duration-normal) var(--ease-out-soft);
}
.navbar.is-scrolled {
    box-shadow: 0 4px 24px rgba(26, 43, 60, 0.08);
}
.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    min-width: 0;
    gap: 12px;
    flex-wrap: wrap;
    padding-top: 12px;
    padding-bottom: 12px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: clamp(18px, 4vw, 22px);
    font-weight: 700;
    color: var(--color-texto);
    text-decoration: none;
    flex-shrink: 0;
    transition: opacity var(--duration-fast) var(--ease-premium);
}
.logo:hover {
    opacity: 0.85;
}
.nav-links { display: flex; gap: 32px; flex-shrink: 0; }
.nav-link {
    font-size: 15px;
    color: var(--color-gris);
    text-decoration: none;
    position: relative;
    padding: 4px 0;
    transition: color var(--duration-fast) var(--ease-out-soft);
}
.nav-link:hover,
.nav-link.active { color: var(--color-texto); }
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 100%;
    height: 2px;
    background-color: var(--color-rojizo);
    transform: translateX(-50%) scaleX(0);
    transform-origin: center;
    transition: transform var(--duration-normal) var(--ease-premium);
}
.nav-link:hover::after,
.nav-link.active::after {
    transform: translateX(-50%) scaleX(1);
}
.nav-actions {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-shrink: 1;
    min-width: 0;
    max-width: 100%;
}
.nav-actions .btn {
    flex: 0 1 auto;
    min-width: 0;
}
.nav-user {
    font-size: 14px;
    color: var(--color-gris);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 140px;
}

.hero {
    min-height: 560px;
    background: linear-gradient(135deg, var(--color-crema) 0%, var(--color-azul) 100%);
    display: flex;
    align-items: center;
    padding: 80px 0;
}
.hero-grid {
    display: grid;
    grid-template-columns: 0.6fr 0.4fr;
    gap: 60px;
    align-items: center;
}
.hero-badge {
    display: inline-flex;
    background: rgba(241, 172, 175, 0.3);
    color: var(--color-texto);
    padding: 4px 14px;
    border-radius: var(--radius-pill);
    margin-bottom: 24px;
    font-size: 14px;
    font-weight: 600;
    animation: fadeSlideDown var(--duration-slow) var(--ease-premium) both;
}
.hero h1 { margin-bottom: 24px; white-space: pre-line; }
.hero h3 {
    font-weight: 400;
    margin-bottom: 40px;
    color: var(--color-texto);
}
.search-wrapper { position: relative; margin-bottom: 24px; }
.search-bar {
    background: var(--color-blanco);
    height: 52px;
    border-radius: 12px;
    box-shadow: var(--shadow-soft);
    display: flex;
    align-items: center;
    padding: 0 6px 0 20px;
}
.search-bar input {
    flex: 1;
    border: none;
    outline: none;
    font-size: 15px;
    color: var(--color-texto);
}
.search-bar .search-icon { margin-right: 12px; font-size: 18px; }
.search-bar .btn { height: 40px; }

.search-results {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: var(--color-blanco);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--color-azul);
    max-height: 360px;
    overflow-y: auto;
    z-index: 100;
    display: none;
}
.search-results.is-visible { display: block; }
.search-result-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    cursor: pointer;
    border-bottom: 1px solid rgba(172, 210, 241, 0.3);
    text-decoration: none;
    color: var(--color-texto);
    transition: background 0.15s;
}
.search-result-item:last-child { border-bottom: none; }
.search-result-item:hover { background: rgba(172, 210, 241, 0.15); }
.search-result-item img {
    width: 40px;
    height: 28px;
    object-fit: cover;
    border-radius: 4px;
}
.search-result-meta { font-size: 13px; color: var(--color-gris); }
.search-empty,
.search-loading {
    padding: 16px;
    text-align: center;
    color: var(--color-gris);
    font-size: 14px;
}

.hero-tags { display: flex; gap: 12px; flex-wrap: wrap; }
.tag-pill {
    background: var(--color-crema);
    border: 1px solid var(--color-azul);
    color: var(--color-texto);
    padding: 6px 16px;
    border-radius: var(--radius-pill);
    font-size: 14px;
    cursor: pointer;
    transition:
        background-color var(--duration-fast) var(--ease-out-soft),
        transform var(--duration-fast) var(--ease-premium),
        box-shadow var(--duration-fast) var(--ease-out-soft);
}
.tag-pill:hover,
.tag-pill.is-active {
    background: var(--color-azul);
    transform: translateY(-1px);
    box-shadow: var(--shadow-soft);
}

.hero-visual { position: relative; }
.hero-cards-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    transform: rotate(-3deg);
}
.mini-card {
    background: var(--color-blanco);
    padding: 20px;
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-soft);
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.mini-card .flag { font-size: 40px; }

.stats-bar {
    background: var(--color-azul);
    padding: clamp(20px, 3vw, 28px) 0;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: clamp(12px, 2vw, 24px);
    width: 100%;
    align-items: stretch;
}
.stat-item {
    text-align: center;
    padding: 8px clamp(8px, 2vw, 16px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    min-height: 72px;
    border-right: 1px solid rgba(26, 43, 60, 0.2);
}
.stat-item:last-child {
    border-right: none;
}
.stat-item h2 {
    margin: 0;
    font-size: clamp(22px, 3vw, 32px);
    line-height: 1.1;
}
.stat-item small {
    display: block;
    line-height: 1.35;
    word-break: break-word;
    hyphens: auto;
}

.featured { padding: 80px 0; background: var(--color-blanco); }
.section-header { text-align: center; margin-bottom: 48px; }
.section-header p { color: var(--color-gris); }
.countries-scroll {
    display: flex;
    gap: 24px;
    overflow-x: auto;
    padding: 20px 0 40px;
    scrollbar-width: none;
}
.countries-scroll::-webkit-scrollbar { display: none; }

.country-card {
    min-width: 260px;
    background: var(--color-blanco);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-soft);
    border-top: 3px solid var(--color-azul);
    display: flex;
    flex-direction: column;
    transition:
        transform var(--duration-normal) var(--ease-premium),
        box-shadow var(--duration-normal) var(--ease-premium);
}
.country-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-premium);
}
.country-flag-img {
    width: 100%;
    height: 140px;
    object-fit: cover;
    border-radius: 9px 9px 0 0;
}
.card-body {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.card-meta { display: flex; flex-direction: column; gap: 8px; }
.meta-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--color-gris);
}
.badge-pill {
    display: inline-flex;
    background: var(--color-crema);
    border: 1px solid var(--color-azul);
    color: var(--color-gris);
    padding: 2px 10px;
    border-radius: var(--radius-pill);
    font-size: 12px;
    width: fit-content;
}
.card-actions { display: flex; gap: 8px; margin-top: 8px; }
.card-actions .btn { flex: 1; font-size: 14px; padding: 10px 0; }
.btn-fav { background: rgba(241, 172, 175, 0.4); }

.comparator-cta { padding: 80px 0; background: var(--color-crema); }
.comparator-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}
.check-list {
    list-style: none;
    margin: 24px 0 32px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.check-list li { display: flex; align-items: center; gap: 12px; }
.comparator-mockup {
    background: var(--color-blanco);
    border-radius: 16px;
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--color-azul);
    overflow: hidden;
}
.mockup-table { width: 100%; border-collapse: collapse; }
.mockup-table th {
    background: var(--color-azul);
    padding: 12px 16px;
    text-align: left;
    font-size: 14px;
}
.mockup-table td {
    padding: 12px 16px;
    font-size: 14px;
    border-bottom: 1px solid rgba(172, 210, 241, 0.3);
}
.mockup-table tr:nth-child(even) { background: var(--color-crema); }
.country-name-cell {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
}

.footer {
    background-color: var(--color-texto);
    color: var(--color-blanco);
    padding: 80px 0 40px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}
.footer-brand .logo { color: var(--color-blanco); margin-bottom: 16px; }
.footer-brand p { color: rgba(255, 255, 255, 0.8); margin-bottom: 8px; }
.footer-brand .api-text { font-size: 13px; color: rgba(255, 255, 255, 0.6); }
.footer-col h4 { font-size: 18px; margin-bottom: 24px; }
.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 15px;
    transition: color 0.2s;
}
.footer-links a:hover { color: var(--color-azul); }
.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid rgba(172, 210, 241, 0.3);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: var(--color-gris);
}

.page-hero {
    background: linear-gradient(135deg, var(--color-crema) 0%, var(--color-azul) 100%);
    padding: 48px 0;
}
.page-hero h1 { font-size: 36px; margin-bottom: 8px; }
.page-content { padding: 48px 0 80px; }

.detail-grid {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 40px;
    align-items: start;
}
.detail-flag {
    width: 100%;
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--color-azul);
}
.detail-info { display: grid; gap: 16px; }
.info-row {
    display: flex;
    gap: 12px;
    padding: 12px 16px;
    background: rgba(172, 210, 241, 0.15);
    border-radius: var(--radius-btn);
}
.info-label { font-weight: 600; min-width: 120px; }

.form-card {
    max-width: 480px;
    margin: 0 auto;
    background: var(--color-blanco);
    padding: 32px;
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--color-azul);
}
.form-group { margin-bottom: 20px; }
.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 14px;
}
.form-group input,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--color-azul);
    border-radius: var(--radius-btn);
    font-size: 15px;
    font-family: inherit;
    transition:
        border-color var(--duration-fast) var(--ease-out-soft),
        box-shadow var(--duration-fast) var(--ease-out-soft);
}
.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #8bbde8;
    box-shadow: 0 0 0 3px rgba(172, 210, 241, 0.35);
}
.form-message {
    margin-top: 16px;
    padding: 12px;
    border-radius: var(--radius-btn);
    font-size: 14px;
    display: none;
}
.form-message.is-error {
    display: block;
    background: rgba(241, 172, 175, 0.4);
    color: var(--color-texto);
}
.form-message.is-success {
    display: block;
    background: rgba(172, 210, 241, 0.4);
    color: var(--color-texto);
}

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(26, 43, 60, 0.45);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition:
        opacity var(--duration-normal) var(--ease-out-soft),
        visibility var(--duration-normal) var(--ease-out-soft);
}
.modal-overlay.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}
.modal {
    background: var(--color-blanco);
    border-radius: var(--radius-card);
    padding: 32px;
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow-premium);
    border: 1px solid rgba(172, 210, 241, 0.5);
    transform: translateY(20px) scale(0.96);
    opacity: 0;
    transition:
        transform var(--duration-normal) var(--ease-premium),
        opacity var(--duration-normal) var(--ease-out-soft);
}
.modal-overlay.is-open .modal {
    transform: translateY(0) scale(1);
    opacity: 1;
}
.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}
.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--color-gris);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition:
        background-color var(--duration-fast) var(--ease-out-soft),
        color var(--duration-fast) var(--ease-out-soft),
        transform var(--duration-fast) var(--ease-premium);
}
.modal-close:hover {
    background: rgba(172, 210, 241, 0.25);
    color: var(--color-texto);
    transform: rotate(90deg);
}

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

.comparison-table-wrap {
    overflow-x: auto;
    border-radius: var(--radius-card);
    border: 1px solid var(--color-azul);
}
.comparison-table { width: 100%; border-collapse: collapse; min-width: 640px; }
.comparison-table th,
.comparison-table td {
    padding: 12px 16px;
    border-bottom: 1px solid rgba(172, 210, 241, 0.3);
    text-align: left;
    font-size: 14px;
}
.comparison-table th { background: var(--color-azul); }
.comparison-table tr:nth-child(even) { background: var(--color-crema); }

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--color-gris);
}

.alert {
    padding: 12px 16px;
    border-radius: var(--radius-btn);
    margin-bottom: 24px;
    font-size: 14px;
}
.alert-info { background: rgba(172, 210, 241, 0.4); }
.alert-error { background: rgba(241, 172, 175, 0.4); }

@media (max-width: 1024px) {
    .hero-grid,
    .comparator-grid,
    .footer-grid,
    .detail-grid {
        grid-template-columns: 1fr;
    }
    .hero-visual { display: none; }
    .nav-links { display: none; }

    .navbar .container {
        flex-wrap: wrap;
    }

    .nav-actions {
        flex: 1 1 auto;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 8px;
        max-width: 100%;
    }

    .nav-actions .btn {
        width: 100%;
        padding: 10px 10px;
        font-size: 13px;
        min-height: 42px;
    }

    .nav-user {
        grid-column: 1 / -1;
        max-width: 100%;
        text-align: right;
    }

    .stats-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .stat-item:nth-child(2) {
        border-right: none;
    }
    .stat-item:nth-child(1),
    .stat-item:nth-child(2) {
        padding-bottom: 12px;
        border-bottom: 1px solid rgba(26, 43, 60, 0.15);
    }
}

@media (max-width: 768px) {
    .container { padding: 0 16px; }

    .navbar .container {
        display: grid;
        grid-template-columns: 1fr;
        grid-template-areas:
            "logo"
            "actions";
        gap: 10px;
        padding-top: 10px;
        padding-bottom: 10px;
    }

    .logo {
        grid-area: logo;
        justify-self: start;
    }

    .nav-links { display: none; }

    .nav-actions {
        grid-area: actions;
        width: 100%;
        max-width: 100%;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 8px;
        align-items: stretch;
    }

    .nav-actions .btn {
        width: 100%;
        padding: 10px 8px;
        font-size: 13px;
        white-space: normal;
        text-align: center;
        line-height: 1.25;
        min-height: 44px;
    }

    .nav-user {
        grid-column: 1 / -1;
        max-width: 100%;
        text-align: center;
        font-size: 13px;
        padding-bottom: 2px;
    }

    .nav-actions .btn-outline:only-of-type,
    .nav-actions .btn-secondary:last-child:nth-child(odd) {
        grid-column: 1 / -1;
    }

    .hero {
        min-height: auto;
        padding: 48px 0;
    }
    .hero-tags {
        flex-direction: column;
        align-items: stretch;
    }
    .tag-pill {
        text-align: center;
    }
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 0;
    }
    .stat-item {
        border-right: none;
        border-bottom: 1px solid rgba(26, 43, 60, 0.15);
        min-height: auto;
        padding: 16px 12px;
    }
    .stat-item:last-child {
        border-bottom: none;
    }
    .country-card {
        min-width: min(260px, 85vw);
    }
    .card-actions {
        flex-direction: column;
    }
    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
    .modal {
        padding: 24px 20px;
        max-height: calc(100vh - 40px);
        overflow-y: auto;
    }
}

@media (max-width: 480px) {
    .nav-actions {
        grid-template-columns: 1fr;
    }

    .nav-actions .btn {
        font-size: 14px;
        padding: 12px 16px;
    }

    .search-bar {
        flex-wrap: wrap;
        height: auto;
        padding: 8px;
        gap: 8px;
    }
    .search-bar input {
        width: 100%;
        min-width: 0;
        padding: 8px 4px;
    }
    .search-bar .btn {
        width: 100%;
        height: 44px;
    }
    .form-card {
        padding: 20px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .btn:hover,
    .country-card:hover,
    .tag-pill:hover {
        transform: none;
    }
}