/* ========================================
   EMPOOBANDO E.S.P. - Estilos CSS
   Sistema de Consulta de Facturas
   ======================================== */

/* === VARIABLES CSS === */
:root {
    /* Colores institucionales */
    --color-empoobando-blue: #2B5C9E;
    --color-empoobando-light-blue: #4A8FD4;
    
    /* Colores de UI */
    --color-primary: #2B5C9E;
    --color-primary-hover: #1E4370;
    --color-success: #1B7A3E;
    --color-success-hover: #156030;
    --color-danger: #D9534F;
    --color-warning: #F0AD4E;
    --color-info: #5BC0DE;
    
    /* Colores de fondo */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8F9FA;
    --bg-header: linear-gradient(135deg, #2B5C9E 0%, #4A8FD4 100%);
    --bg-card: #FFFFFF;
    
    /* Colores de texto */
    --text-primary: #212529;
    --text-secondary: #6C757D;
    --text-light: #FFFFFF;
    
    /* Sombras */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
    
    /* Bordes */
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --border-color: #DEE2E6;
    
    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
}

/* === RESET Y BASE === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* === HEADER === */
.header {
    background: var(--bg-header);
    color: var(--text-light);
    padding: var(--spacing-md) 0;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.logo-container {
    display: flex;
    justify-content: center;
    align-items: center;
}

.logo-main {
    max-width: 100%;
    height: auto;
    max-height: 100px;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
    transition: transform 0.3s ease;
}

.logo-main:hover {
    transform: scale(1.02);
}

/* === MAIN CONTENT === */
.main-content {
    flex: 1;
    padding: var(--spacing-xl) 0;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* === SECTION HEADER === */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-title {
    font-size: 2rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.section-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

/* === SEARCH CARD === */
.search-card {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-md);
}

/* === FORM === */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-input {
    width: 100%;
    padding: 0.875rem 1rem;
    font-size: 1.25rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
    text-align: center;
    font-weight: 600;
    letter-spacing: 2px;
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(43, 92, 158, 0.1);
}

.form-input::placeholder {
    color: #CED4DA;
    font-weight: 400;
    letter-spacing: 1px;
}

.form-hint {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
    text-align: center;
}

/* === BUTTONS === */
.btn-primary,
.btn-success {
    width: 100%;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    box-shadow: var(--shadow-sm);
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--text-light);
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.btn-success {
    background-color: var(--color-success);
    color: var(--text-light);
}

.btn-success:hover {
    background-color: var(--color-success-hover);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.btn-primary:active,
.btn-success:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.btn-primary:disabled,
.btn-success:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-icon {
    font-size: 1.25rem;
}

/* === MESSAGE BOX === */
.message-box {
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
    font-weight: 500;
    text-align: center;
}

.message-box.success {
    background-color: #D4EDDA;
    color: #155724;
    border: 1px solid #C3E6CB;
}

.message-box.error {
    background-color: #F8D7DA;
    color: #721C24;
    border: 1px solid #F5C6CB;
}

.message-box.info {
    background-color: #D1ECF1;
    color: #0C5460;
    border: 1px solid #BEE5EB;
}

/* === RESULT SECTION === */
.result-section {
    animation: fadeIn 0.4s ease-in;
}

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

.result-card {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.result-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-empoobando-light-blue) 100%);
    color: var(--text-light);
    padding: var(--spacing-md);
    text-align: center;
}

.result-title {
    font-size: 1.5rem;
    font-weight: 600;
}

.result-body {
    padding: var(--spacing-lg);
}

.info-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

.info-item {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: var(--spacing-sm);
    background-color: var(--bg-secondary);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--color-primary);
}

.info-label {
    font-weight: 600;
    color: var(--color-primary);
    font-size: 0.95rem;
}

.info-value {
    font-size: 1.1rem;
    color: var(--text-primary);
    font-weight: 500;
    text-align: right;
}

.result-footer {
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--bg-secondary);
}

/* === FOOTER === */
.footer {
    background: linear-gradient(135deg, #1E4370 0%, #2B5C9E 100%);
    color: var(--text-light);
    padding: var(--spacing-lg) 0;
    margin-top: auto;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.footer-section {
    line-height: 1.8;
}

.footer-section.footer-full {
    grid-column: 1 / -1;
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    padding-bottom: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.footer-section h4 {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
    font-weight: 700;
}

.footer-subtitle {
    font-size: 0.95rem;
    opacity: 0.9;
    font-style: italic;
}

.footer-section h5 {
    font-size: 1rem;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.footer-section p {
    font-size: 0.875rem;
    opacity: 0.9;
    margin-bottom: 0.25rem;
}

.footer-section strong {
    font-weight: 600;
}

.footer-link {
    color: var(--text-light);
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.footer-link:hover {
    opacity: 0.8;
    text-decoration: underline;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    font-size: 0.875rem;
    opacity: 0.8;
}

/* === RESPONSIVE DESIGN === */
@media (max-width: 768px) {
    .logo-main {
        max-height: 80px;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .section-description {
        font-size: 1rem;
    }
    
    .search-card {
        padding: var(--spacing-md);
    }
    
    .info-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }
    
    .info-value {
        text-align: left;
    }
    
    .footer-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-section.footer-full {
        grid-column: 1;
    }
}

@media (max-width: 480px) {
    .logo-main {
        max-height: 60px;
    }
    
    .btn-primary,
    .btn-success {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
}

/* === UTILITIES === */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }

/* === LOADING STATE === */
.btn-primary.loading,
.btn-success.loading {
    position: relative;
    color: transparent;
}

.btn-primary.loading::after,
.btn-success.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    top: 50%;
    left: 50%;
    margin-left: -10px;
    margin-top: -10px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spinner 0.8s linear infinite;
}

@keyframes spinner {
    to { transform: rotate(360deg); }
}