:root {
    --bg-primary: linear-gradient(135deg, #74b9ff 0%, #0984e3 100%);
    --bg-card: rgba(255, 255, 255, 0.95);
    --bg-card-hover: rgba(255, 255, 255, 0.98);
    --text-primary: white;
    --text-secondary: rgba(255, 255, 255, 0.9);
    --text-dark: #333;
    --text-muted: rgba(0, 0, 0, 0.6);
    --border-color: rgba(255, 255, 255, 0.2);
    --shadow: rgba(0, 0, 0, 0.2);
    --shadow-hover: rgba(0, 0, 0, 0.3);
    --clima-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --input-bg: white;
    --input-border: #e9ecef;
    --input-focus: #667eea;
    --bg-body: #f8f9fa;
    --bg-secondary: #e9ecef;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
}

[data-theme="dark"] {
    --bg-primary: linear-gradient(135deg, #0f1419 0%, #1a1f26 100%);
    --bg-card: rgba(26, 32, 44, 0.98);
    --bg-card-hover: rgba(30, 38, 52, 0.98);
    --text-primary: #e8eaed;
    --text-secondary: rgba(232, 234, 237, 0.85);
    --text-dark: #e8eaed;
    --text-muted: rgba(232, 234, 237, 0.6);
    --border-color: rgba(232, 234, 237, 0.12);
    --shadow: rgba(0, 0, 0, 0.6);
    --shadow-hover: rgba(0, 0, 0, 0.8);
    --clima-gradient: linear-gradient(135deg, #2980b9 0%, #1f5f8b 100%);
    --input-bg: #1a1f26;
    --input-border: rgba(232, 234, 237, 0.15);
    --input-focus: #3498db;
    --bg-body: #0f1419;
    --bg-secondary: #1a1f26;
    --success-color: #27ae60;
    --danger-color: #c0392b;
    --warning-color: #d68910;
    --info-color: #2980b9;
}

body {
    background: var(--bg-primary);
    min-height: 100vh;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    transition: background 0.3s ease, color 0.3s ease;
    color: var(--text-dark);
}

/* Transición suave para cambio de tema */
body.theme-transitioning,
body.theme-transitioning * {
    transition: background-color 0.3s ease, 
                color 0.3s ease, 
                border-color 0.3s ease,
                box-shadow 0.3s ease !important;
}

/* Mejorar contraste en modo oscuro */
[data-theme="dark"] body {
    background: var(--bg-primary) !important;
    background-color: var(--bg-body) !important;
    color: var(--text-dark) !important;
}

/* Forzar actualización de fondo en modo oscuro */
[data-theme="dark"] {
    color-scheme: dark;
}

[data-theme="light"] {
    color-scheme: light;
}

header h1 {
    color: var(--text-primary) !important;
    text-shadow: 2px 2px 4px var(--shadow);
    font-weight: bold;
    transition: color 0.3s ease, text-shadow 0.3s ease;
}

header p {
    color: var(--text-secondary);
    text-shadow: 1px 1px 2px var(--shadow);
    transition: color 0.3s ease, text-shadow 0.3s ease;
}

.clima-card {
    background: var(--bg-card);
    border-radius: 20px;
    box-shadow: 0 10px 30px var(--shadow);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease, border-color 0.3s ease;
}

.clima-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px var(--shadow-hover);
    background: var(--bg-card-hover);
}

.clima-principal {
    text-align: center;
    padding: 2rem;
    background: var(--clima-gradient);
    color: white;
    border-radius: 20px 20px 0 0;
    transition: background 0.3s ease;
}

.temperatura {
    font-size: 4rem;
    font-weight: bold;
    text-shadow: 2px 2px 4px var(--shadow);
    margin: 0;
}

.ciudad {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    opacity: 0.9;
}

.descripcion {
    font-size: 1.1rem;
    text-transform: capitalize;
    opacity: 0.8;
}

.clima-detalles {
    padding: 1.5rem;
}

.detalle-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .detalle-item {
    border-bottom: 1px solid rgba(232, 234, 237, 0.1);
}

.detalle-item:last-child {
    border-bottom: none;
}

.detalle-icono {
    color: var(--input-focus, #667eea);
    font-size: 1.2rem;
    width: 30px;
    text-align: center;
    transition: color 0.3s ease;
}

.detalle-texto {
    flex: 1;
    margin-left: 1rem;
}

.detalle-valor {
    font-weight: bold;
    color: var(--text-dark);
    transition: color 0.3s ease;
}

.btn-primary {
    background: var(--clima-gradient);
    border: none;
    border-radius: 10px;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: var(--clima-gradient);
    filter: brightness(0.9);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px var(--shadow);
}

.btn-outline-primary {
    border: 2px solid var(--input-focus);
    color: var(--input-focus);
    border-radius: 10px;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-outline-primary:hover {
    background: var(--input-focus);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px var(--shadow);
}

.form-control {
    border-radius: 10px;
    border: 2px solid var(--input-border);
    background-color: var(--input-bg);
    color: var(--text-dark);
    padding: 0.75rem 1rem;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: var(--input-focus);
    box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.25);
    background-color: var(--input-bg);
    color: var(--text-dark);
}

.form-control::placeholder {
    color: var(--text-muted);
    opacity: 1;
}

[data-theme="dark"] .form-control::placeholder {
    color: rgba(232, 234, 237, 0.5);
}

/* Estilos para componentes Bootstrap en modo oscuro */
[data-theme="dark"] .card {
    background-color: var(--bg-card);
    border-color: var(--border-color);
    color: var(--text-dark);
}

[data-theme="dark"] .card-body {
    color: var(--text-dark);
}

[data-theme="dark"] .card-header {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-dark);
}

[data-theme="dark"] .card-header.bg-primary {
    background: var(--clima-gradient) !important;
    color: white;
}

[data-theme="dark"] .card-header.bg-info {
    background: var(--info-color) !important;
}

[data-theme="dark"] .card-header.bg-warning {
    background: var(--warning-color) !important;
    color: #333 !important;
}

[data-theme="dark"] .card-header.bg-success {
    background: var(--success-color) !important;
}

[data-theme="dark"] .btn-outline-light {
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .btn-outline-light:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.3);
    color: var(--text-primary);
}

[data-theme="dark"] .btn-outline-secondary {
    border-color: var(--border-color);
    color: var(--text-secondary);
}

[data-theme="dark"] .btn-outline-secondary:hover {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .alert {
    background-color: var(--bg-card);
    border-color: var(--border-color);
    color: var(--text-dark);
}

[data-theme="dark"] .alert-success {
    background-color: rgba(46, 204, 113, 0.2);
    border-color: var(--success-color);
    color: var(--success-color);
}

[data-theme="dark"] .alert-danger {
    background-color: rgba(231, 76, 60, 0.2);
    border-color: var(--danger-color);
    color: #ff6b6b;
}

[data-theme="dark"] .alert-info {
    background-color: rgba(52, 152, 219, 0.2);
    border-color: var(--info-color);
    color: var(--info-color);
}

[data-theme="dark"] .dropdown-menu {
    background-color: var(--bg-card);
    border-color: var(--border-color);
    box-shadow: 0 5px 15px var(--shadow);
}

[data-theme="dark"] .dropdown-item {
    color: var(--text-dark);
}

[data-theme="dark"] .dropdown-item:hover {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

[data-theme="dark"] .form-check-input {
    background-color: var(--input-bg);
    border-color: var(--input-border);
}

[data-theme="dark"] .form-check-input:checked {
    background-color: var(--input-focus);
    border-color: var(--input-focus);
}

[data-theme="dark"] .form-check-label {
    color: var(--text-dark);
}

[data-theme="dark"] .text-muted {
    color: var(--text-muted) !important;
}

[data-theme="dark"] .container-fluid {
    background: var(--bg-primary);
}

[data-theme="dark"] header {
    background: transparent;
}

[data-theme="dark"] .display-4,
[data-theme="dark"] h1,
[data-theme="dark"] h2,
[data-theme="dark"] h3,
[data-theme="dark"] h4,
[data-theme="dark"] h5,
[data-theme="dark"] h6 {
    color: var(--text-primary) !important;
}

[data-theme="dark"] .lead,
[data-theme="dark"] p {
    color: var(--text-secondary);
}

[data-theme="dark"] .btn {
    transition: all 0.3s ease;
}

[data-theme="dark"] .btn-primary {
    background: var(--clima-gradient) !important;
    border-color: transparent !important;
    color: white !important;
}

[data-theme="dark"] .btn-primary:hover {
    background: var(--clima-gradient) !important;
    filter: brightness(0.85);
    color: white !important;
}

[data-theme="dark"] .btn-success {
    background: var(--success-color) !important;
    border-color: var(--success-color) !important;
    color: white !important;
}

[data-theme="dark"] .btn-success:hover {
    background: #229954 !important;
    border-color: #229954 !important;
    color: white !important;
}

[data-theme="dark"] .btn-outline-success {
    border-color: var(--success-color);
    color: var(--success-color);
}

[data-theme="dark"] .btn-outline-success:hover {
    background: var(--success-color);
    border-color: var(--success-color);
    color: white;
}

[data-theme="dark"] .btn-outline-primary {
    border-color: var(--input-focus);
    color: var(--input-focus);
}

[data-theme="dark"] .btn-outline-primary:hover {
    background: var(--input-focus);
    border-color: var(--input-focus);
    color: white;
}

[data-theme="dark"] .shadow {
    box-shadow: 0 0.5rem 1rem var(--shadow) !important;
}

[data-theme="dark"] .card.shadow {
    box-shadow: 0 10px 30px var(--shadow) !important;
}

[data-theme="dark"] input,
[data-theme="dark"] select,
[data-theme="dark"] textarea {
    background-color: var(--input-bg) !important;
    border-color: var(--input-border) !important;
    color: var(--text-dark) !important;
}

[data-theme="dark"] input:focus,
[data-theme="dark"] select:focus,
[data-theme="dark"] textarea:focus {
    background-color: var(--input-bg) !important;
    border-color: var(--input-focus) !important;
    color: var(--text-dark) !important;
    box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.25) !important;
}

[data-theme="dark"] .container-fluid {
    background: var(--bg-primary);
    min-height: 100vh;
}

[data-theme="dark"] .btn-outline-light {
    border-color: rgba(255, 255, 255, 0.3);
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.5);
    color: var(--text-primary);
}

[data-theme="dark"] .btn-outline-secondary {
    border-color: var(--border-color);
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.03);
}

[data-theme="dark"] .btn-outline-secondary:hover {
    background: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .login-card .card {
    background-color: var(--bg-card);
    border-color: var(--border-color);
}

[data-theme="dark"] .login-card .card-body {
    background-color: var(--bg-card);
    color: var(--text-dark);
}

[data-theme="dark"] .input-group-text {
    background-color: var(--input-bg);
    border-color: var(--input-border);
    color: var(--text-dark);
}

[data-theme="dark"] .input-group .form-control {
    background-color: var(--input-bg);
    border-color: var(--input-border);
    color: var(--text-dark);
}

[data-theme="dark"] .input-group .form-control:focus {
    background-color: var(--input-bg);
    border-color: var(--input-focus);
    color: var(--text-dark);
}

#themeToggle {
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    color: var(--text-primary);
    transition: all 0.3s ease;
    cursor: pointer;
}

[data-theme="dark"] #themeToggle {
    border-color: rgba(232, 234, 237, 0.3);
    background: rgba(232, 234, 237, 0.1);
}

#themeToggle:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    transform: scale(1.1);
}

[data-theme="dark"] #themeToggle:hover {
    background: rgba(232, 234, 237, 0.2);
    border-color: rgba(232, 234, 237, 0.5);
}

#themeToggle.clicking {
    transform: scale(0.95);
}

#themeIcon {
    transition: transform 0.3s ease;
}

#themeToggle.active #themeIcon {
    transform: rotate(360deg);
}

.alert-danger {
    background: rgba(220, 53, 69, 0.9);
    border: none;
    border-radius: 10px;
    color: white;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.alert-success {
    border-radius: 10px;
    transition: all 0.3s ease;
}

#favoritosContainer {
    min-height: 60px;
}

#agregarFavoritoBtn {
    transition: all 0.3s ease;
}

#agregarFavoritoBtn:hover {
    transform: scale(1.05);
}

.ciudad-favorita {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 1rem;
    margin-bottom: 0.5rem;
    transition: all 0.3s ease;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.ciudad-favorita:hover {
    background: var(--bg-card-hover);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px var(--shadow);
}

.ciudad-favorita:last-child {
    margin-bottom: 0;
}

.favorita-info {
    flex: 1;
}

.favorita-nombre {
    font-weight: bold;
    color: var(--text-dark);
    margin-bottom: 0.25rem;
    font-size: 1.1rem;
}

.favorita-pais {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.favorita-acciones {
    display: flex;
    gap: 0.5rem;
}

.btn-favorito {
    padding: 0.5rem;
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.btn-consultar {
    background: var(--clima-gradient);
    color: white;
}

.btn-consultar:hover {
    background: var(--clima-gradient);
    filter: brightness(0.9);
    color: white;
    transform: scale(1.1);
}

.btn-eliminar {
    background: #dc3545;
    color: white;
}

.btn-eliminar:hover {
    background: #c82333;
    color: white;
    transform: scale(1.1);
}

[data-theme="dark"] .btn-eliminar {
    background: var(--danger-color);
}

[data-theme="dark"] .btn-eliminar:hover {
    background: #c0392b;
}

#sinFavoritos {
    padding: 2rem;
    font-style: italic;
    color: var(--text-muted);
}

.favoritos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1rem;
}

#languageDropdown {
    min-width: 80px;
    transition: all 0.3s ease;
}

#languageDropdown:hover {
    transform: scale(1.05);
}

.dropdown-menu {
    border: none;
    border-radius: 10px;
    box-shadow: 0 5px 15px var(--shadow);
    background: var(--bg-card);
    backdrop-filter: blur(10px);
}

.dropdown-item {
    padding: 0.75rem 1rem;
    transition: all 0.3s ease;
    color: var(--text-dark);
    border-radius: 8px;
    margin: 0.25rem;
}

.dropdown-item:hover {
    background: var(--clima-gradient);
    color: white;
    transform: translateX(5px);
}

.dropdown-item i {
    width: 16px;
    text-align: center;
}

#currentLanguage {
    font-weight: bold;
    font-size: 0.9rem;
}

.gap-2 {
    gap: 0.5rem;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

@keyframes slideInFavorito {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.ciudad-favorita.nueva {
    animation: slideInFavorito 0.5s ease-out;
}

#loadingSpinner .spinner-border {
    width: 3rem;
    height: 3rem;
    color: var(--text-primary);
}

#loadingSpinner p {
    color: var(--text-primary);
    text-shadow: 1px 1px 2px var(--shadow);
}

@media (max-width: 768px) {
    .temperatura {
        font-size: 3rem;
    }

    .ciudad {
        font-size: 1.2rem;
    }

    .clima-principal {
        padding: 1.5rem;
    }

    .clima-detalles {
        padding: 1rem;
    }

    .favoritos-grid {
        grid-template-columns: 1fr;
    }
    
    .ciudad-favorita {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .favorita-acciones {
        justify-content: center;
    }

    .d-flex.justify-content-end {
        justify-content: center !important;
    }
    
    #languageDropdown,
    #themeToggle {
        width: 45px;
        height: 45px;
        font-size: 0.9rem;
    }
    
    #currentLanguage {
        font-size: 0.8rem;
    }
}