/* Estilos profesionales para aplicación GNSS científica - Paleta Profesional y Vibrante */
@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;500;700&family=Source+Code+Pro:wght@400;600&display=swap');

:root {
    --primary-color: #1a1a2e;
    --secondary-color: #16213e;
    --accent-color: #0f3460;
    --warning-color: #e94560;
    --text-primary: #0f0f23;
    --text-secondary: #2d2d44;
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --border-color: #d1d5db;
    --shadow-light: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 16px rgba(0, 0, 0, 0.15);
    --border-radius: 8px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', Oxygen, Ubuntu, Cantarell, sans-serif;
    text-align: center;
    margin: 0;
    padding: 15px;
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
    color: var(--text-primary);
    line-height: 1.5;
    font-weight: 400;
    min-height: 100vh;
    font-size: 14px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.container {
    width: 100%;
    max-width: 900px;
    margin: 0;
    background: var(--bg-primary);
    padding: 25px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-medium);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-color), var(--warning-color));
}

/* Header con fecha y hora */
#fecha-hora {
    font-size: 1em;
    margin-bottom: 20px;
    padding: 18px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: #ffffff;
    border-radius: var(--border-radius);
    position: relative;
    overflow: hidden;
}

#fecha-hora::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-15px) rotate(180deg); }
}

#fecha {
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 8px;
    font-size: 1.2em;
    text-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

#hora {
    font-size: 1.1em;
    color: #cbd5e1;
    font-family: 'Source Code Pro', 'Courier New', monospace;
    font-weight: 600;
    letter-spacing: 0.5px;
}

/* Información actual */
.info-item {
    margin-bottom: 15px;
    padding: 15px;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    border-left: 3px solid var(--accent-color);
    transition: var(--transition);
}

.info-item:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-light);
}

.info-item p {
    font-size: 1.1em;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* Títulos principales - Selector directo y específico */
.titulo-principal p {
    font-size: 1.3em !important;
    font-weight: 700 !important;
    color: var(--primary-color) !important;
    margin-bottom: 20px !important;
    text-transform: none !important;
    letter-spacing: 0.3px !important;
    position: relative !important;
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', Oxygen, Ubuntu, Cantarell, sans-serif !important;
    line-height: 1.3 !important;
    text-align: center !important;
    word-wrap: break-word !important;
    overflow-wrap: break-word !important;
}

.titulo-principal p::before {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 2px;
    background: var(--accent-color);
    border-radius: 1px;
}

/* Estilos para contenedores de títulos principales */
.titulo-principal {
    margin: 25px 0 20px 0;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.titulo-principal::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 1px;
    background: var(--accent-color);
}

/* Contenido principal */
#contenido {
    font-size: 1em;
    color: var(--text-primary);
    margin-bottom: 20px;
    padding: 18px;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

#contenido p {
    font-size: 1em;
    font-weight: 500;
    margin-bottom: 15px;
    text-align: justify;
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* Formularios */
#formulario-gnss {
    margin: 20px 0;
    padding: 20px;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.form-wrapper {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-top: 15px;
}

.form-wrapper > label {
    flex-shrink: 0;
}

.form-wrapper > input,
.form-wrapper > button {
    flex-grow: 1;
    flex-basis: 180px;
}

/* Inputs */
input {
    font-size: 1em;
    padding: 10px 15px;
    margin: 0;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    transition: var(--transition);
    background: var(--bg-primary);
    font-family: 'Source Code Pro', 'Courier New', monospace;
    font-weight: 500;
    box-shadow: var(--shadow-light);
    max-width: 100%;
    box-sizing: border-box;
}

input[type="date"] {
    width: 100%;
    max-width: 180px;
    padding: 10px;
    font-family: 'Roboto', sans-serif;
    text-align: center;
}

input[type="number"] {
    width: 100%;
    max-width: 150px;
    text-align: center;
}

input:focus {
    border-color: var(--accent-color);
    outline: none;
    box-shadow: 0 0 0 2px rgba(15, 52, 96, 0.15);
    transform: translateY(-1px);
}

/* Botones */
button {
    font-size: 1em;
    padding: 10px 20px;
    cursor: pointer;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--secondary-color) 100%);
    color: #ffffff;
    border: none;
    border-radius: 6px;
    transition: var(--transition);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    box-shadow: var(--shadow-light);
    font-family: 'Roboto', sans-serif;
    position: relative;
    overflow: hidden;
    max-width: 100%;
    box-sizing: border-box;
}

button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

button:hover::before {
    left: 100%;
}

button:hover {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
    transform: translateY(-1px);
    box-shadow: var(--shadow-medium);
}

button:active {
    transform: translateY(0);
}

/* Resultados */
#resultado, #resultado-gnss, #fecha-gnss {
    font-weight: 600;
    font-size: 1.1em;
    color: var(--accent-color);
    margin-top: 15px;
    padding: 15px;
    background: linear-gradient(135deg, rgba(15, 52, 96, 0.1) 0%, rgba(15, 52, 96, 0.05) 100%);
    border-radius: var(--border-radius);
    border-left: 3px solid var(--accent-color);
    box-shadow: var(--shadow-light);
    transition: var(--transition);
    word-wrap: break-word;
    overflow-wrap: break-word;
}

#resultado:hover, #resultado-gnss:hover, #fecha-gnss:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-medium);
}

/* Información de efemérides */
#efemerides-info {
    font-weight: 600;
    color: var(--warning-color);
    padding: 15px;
    background: linear-gradient(135deg, rgba(233, 69, 96, 0.1) 0%, rgba(233, 69, 96, 0.05) 100%);
    border-radius: var(--border-radius);
    border-left: 3px solid var(--warning-color);
    margin: 20px 0;
    box-shadow: var(--shadow-light);
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* Enlaces */
a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    padding: 8px 15px;
    border-radius: 6px;
    background: linear-gradient(135deg, rgba(15, 52, 96, 0.1) 0%, rgba(15, 52, 96, 0.05) 100%);
    display: inline-block;
    margin: 6px;
    border: 1px solid rgba(15, 52, 96, 0.2);
    position: relative;
    overflow: hidden;
    word-wrap: break-word;
    overflow-wrap: break-word;
    max-width: 100%;
    box-sizing: border-box;
}

a::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(15, 52, 96, 0.1), transparent);
    transition: left 0.5s;
}

a:hover::before {
    left: 100%;
}

a:hover {
    color: var(--primary-color);
    background: linear-gradient(135deg, rgba(15, 52, 96, 0.15) 0%, rgba(15, 52, 96, 0.1) 100%);
    transform: translateY(-1px);
    box-shadow: var(--shadow-light);
}

/* Sección de descarga */
#descarga {
    margin-top: 25px;
    padding: 20px;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-light);
}

#link-descarga, #link-nasa {
    margin: 10px 0;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .container {
        margin: 10px;
        padding: 20px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 15px;
        margin: 8px;
        border-radius: 6px;
    }
    
    #fecha-hora {
        padding: 15px;
        margin-bottom: 15px;
    }
    
    #fecha {
        font-size: 1.1em;
    }
    
    #hora {
        font-size: 1em;
    }
    
    .titulo-principal p {
        font-size: 1.2em !important;
    }
    
    #contenido {
        padding: 15px;
    }
    
    #contenido p {
        font-size: 0.95em;
        text-align: left;
    }
    
    #formulario-gnss {
        padding: 15px;
    }
    
    input[type="date"] {
        width: 100%;
        max-width: 160px;
        padding: 8px;
    }
    
    input[type="number"] {
        width: 100%;
        max-width: 130px;
        padding: 8px;
    }
    
    button {
        padding: 8px 15px;
        font-size: 0.95em;
        width: 100%;
        margin: 0;
    }
    
    .info-item {
        padding: 12px;
    }
    
    .info-item p {
        font-size: 1em;
    }
    
    #resultado, #resultado-gnss, #fecha-gnss {
        padding: 12px;
        font-size: 1em;
    }
    
    #efemerides-info {
        padding: 12px;
        font-size: 0.9em;
    }
    
    a {
        padding: 6px 12px;
        font-size: 0.85em;
        display: block;
        margin: 6px 0;
    }
    
    #descarga {
        padding: 15px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 12px;
        margin: 5px;
    }
    
    #fecha-hora {
        padding: 12px;
    }
    
    #fecha {
        font-size: 1em;
    }
    
    #hora {
        font-size: 0.9em;
    }
    
    .titulo-principal p {
        font-size: 1.1em !important;
    }
    
    input[type="date"] {
        width: 100%;
        max-width: 140px;
        padding: 6px;
    }
    
    input[type="number"] {
        width: 100%;
        max-width: 110px;
        padding: 6px;
    }
    
    button {
        padding: 6px 12px;
        font-size: 0.9em;
    }
    
    .info-item p {
        font-size: 0.95em;
    }
    
    #resultado, #resultado-gnss, #fecha-gnss {
        padding: 10px;
        font-size: 0.95em;
    }
    
    #efemerides-info {
        padding: 10px;
        font-size: 0.85em;
    }
    
    a {
        padding: 5px 10px;
        font-size: 0.8em;
    }
}

/* Contenedor muy estrecho */
@media (max-width: 400px) {
    .container {
        padding: 10px;
        margin: 3px;
    }
    
    input[type="date"] {
        max-width: 120px;
    }
    
    input[type="number"] {
        max-width: 90px;
    }
    
    .titulo-principal p {
        font-size: 1em !important;
    }
    
    #contenido p {
        font-size: 0.9em;
    }
}

/* Animaciones de entrada */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.container > * {
    animation: fadeInUp 0.6s ease-out;
}

.container > *:nth-child(1) { animation-delay: 0.1s; }
.container > *:nth-child(2) { animation-delay: 0.2s; }
.container > *:nth-child(3) { animation-delay: 0.3s; }
.container > *:nth-child(4) { animation-delay: 0.4s; }
.container > *:nth-child(5) { animation-delay: 0.5s; }
.container > *:nth-child(6) { animation-delay: 0.6s; }
.container > *:nth-child(7) { animation-delay: 0.7s; }
.container > *:nth-child(8) { animation-delay: 0.8s; }
.container > *:nth-child(9) { animation-delay: 0.9s; }
.container > *:nth-child(10) { animation-delay: 1.0s; }