/* =============================================
   Baluarte Ward - Professional Design System
   Color Scheme: Blue & Dark Blue-Green
   ============================================= */

:root {
    /* Primary Colors */
    --primary-dark: #0d3b66;        /* Dark Blue */
    --primary-blue: #1e5f8b;        /* Medium Blue */
    --primary-teal: #2a6f7e;        /* Dark Blue-Green */
    --primary-light: #4a90a4;       /* Light Blue */

    /* Accent Colors */
    --accent-teal: #16a085;         /* Accent Teal */
    --accent-light: #3498db;        /* Bright Blue */

    /* Neutral Colors */
    --white: #ffffff;
    --gray-50: #f8f9fa;
    --gray-100: #e9ecef;
    --gray-200: #dee2e6;
    --gray-300: #ced4da;
    --gray-700: #495057;
    --gray-800: #343a40;
    --gray-900: #212529;

    /* Semantic Colors */
    --success: #27ae60;
    --warning: #f39c12;
    --danger: #e74c3c;
    --info: #3498db;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(13, 59, 102, 0.1);
    --shadow-md: 0 4px 12px rgba(13, 59, 102, 0.15);
    --shadow-lg: 0 8px 24px rgba(13, 59, 102, 0.2);

    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* =============================================
   Global Styles
   ============================================= */

* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--gray-100) 100%);
    color: var(--gray-800);
    line-height: 1.6;
    min-height: 100vh;
}

/* =============================================
   Navigation & Header
   ============================================= */

.navbar {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-teal) 100%);
    box-shadow: var(--shadow-md);
    padding: 1rem 0;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--white) !important;
    transition: var(--transition);
}

.navbar-brand:hover {
    transform: translateY(-2px);
    color: var(--gray-100) !important;
}

.nav-link {
    color: rgba(255, 255, 255, 0.9) !important;
    font-weight: 500;
    transition: var(--transition);
    margin: 0 0.5rem;
}

.nav-link:hover {
    color: var(--white) !important;
    transform: translateY(-2px);
}

/* =============================================
   Cards & Tiles
   ============================================= */

.card {
    border: none;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    overflow: hidden;
    background: var(--white);
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.card-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-teal) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    transition: var(--transition);
}

.card:hover .card-icon {
    transform: scale(1.1) rotate(5deg);
    background: linear-gradient(135deg, var(--accent-light) 0%, var(--accent-teal) 100%);
}

.card-icon i {
    font-size: 2.5rem;
    color: var(--white);
}

.card-title {
    color: var(--primary-dark);
    font-weight: 700;
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.card-text {
    color: var(--gray-700);
    font-size: 0.95rem;
}

.card-link {
    text-decoration: none;
    color: inherit;
}

.card-link:hover {
    color: inherit;
}

/* =============================================
   Buttons
   ============================================= */

.btn {
    border-radius: 8px;
    padding: 0.625rem 1.5rem;
    font-weight: 600;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-teal) 100%);
    color: var(--white);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-blue) 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--gray-700);
    color: var(--white);
}

.btn-secondary:hover {
    background: var(--gray-800);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline-primary {
    border: 2px solid var(--primary-blue);
    color: var(--primary-blue);
    background: transparent;
}

.btn-outline-primary:hover {
    background: var(--primary-blue);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 0.875rem 2rem;
    font-size: 1.1rem;
}

.btn-sm {
    padding: 0.375rem 1rem;
    font-size: 0.875rem;
}

/* =============================================
   Tables
   ============================================= */

.table-responsive {
    border-radius: 12px;
    background: var(--white);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.table {
    margin-bottom: 0;
}

.table thead th {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-teal) 100%);
    color: var(--white);
    font-weight: 600;
    border: none;
    padding: 1rem;
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 0.5px;
}

.table tbody tr {
    transition: var(--transition);
}

.table tbody tr:hover {
    background-color: rgba(30, 95, 139, 0.05);
}

.table tbody td {
    padding: 1rem;
    vertical-align: middle;
    border-color: var(--gray-200);
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: var(--gray-50);
}

/* =============================================
   Forms
   ============================================= */

.form-control,
.form-select {
    border: 2px solid var(--gray-300);
    border-radius: 8px;
    padding: 0.625rem 1rem;
    transition: var(--transition);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 0.2rem rgba(30, 95, 139, 0.15);
    outline: none;
}

.form-label {
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 0.5rem;
}

.form-section {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    margin-bottom: 1.5rem;
}

/* =============================================
   Modals
   ============================================= */

.modal-content {
    border: none;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-teal) 100%);
    color: var(--white);
    border-radius: 12px 12px 0 0;
    border: none;
}

.modal-header .btn-close {
    filter: invert(1);
}

.modal-footer {
    border-top: 1px solid var(--gray-200);
    padding: 1rem 1.5rem;
}

.modal-body {
    padding: 2rem;
}

/* =============================================
   Utilities
   ============================================= */

.page-header {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-teal) 100%);
    color: var(--white);
    padding: 3rem 0;
    margin-bottom: 3rem;
    box-shadow: var(--shadow-md);
}

.page-header h1 {
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.page-header p {
    opacity: 0.9;
    margin-bottom: 0;
}

.section-title {
    color: var(--primary-dark);
    font-weight: 700;
    margin-bottom: 2rem;
    position: relative;
    padding-bottom: 0.75rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue) 0%, var(--accent-teal) 100%);
    border-radius: 2px;
}

.disclaimer {
    background: var(--gray-100);
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--primary-blue);
    font-size: 0.875rem;
    color: var(--gray-700);
    margin-top: 2rem;
}

.spinner-border {
    color: var(--primary-blue);
}

/* =============================================
   Loading States
   ============================================= */

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

/* =============================================
   Responsive Design
   ============================================= */

@media (max-width: 768px) {
    .page-header {
        padding: 2rem 0;
        margin-bottom: 2rem;
    }

    .page-header h1 {
        font-size: 1.75rem;
    }

    .card-icon {
        width: 60px;
        height: 60px;
    }

    .card-icon i {
        font-size: 2rem;
    }

    .form-section {
        padding: 1.5rem;
    }

    .btn {
        width: 100%;
        margin-bottom: 0.5rem;
    }

    .table {
        font-size: 0.875rem;
    }

    .table thead th,
    .table tbody td {
        padding: 0.75rem 0.5rem;
    }
}

@media (max-width: 576px) {
    .card-icon {
        width: 50px;
        height: 50px;
    }

    .card-icon i {
        font-size: 1.5rem;
    }

    .navbar-brand {
        font-size: 1.25rem;
    }
}

/* =============================================
   Animations
   ============================================= */

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

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

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.slide-in {
    animation: slideIn 0.5s ease-out;
}

/* =============================================
   Footer
   ============================================= */

.footer {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-teal) 100%);
    color: var(--white);
    padding: 2rem 0;
    margin-top: 4rem;
    box-shadow: 0 -4px 12px rgba(13, 59, 102, 0.15);
}

.footer p {
    margin: 0;
    font-size: 0.95rem;
    opacity: 0.95;
}

.footer strong {
    font-weight: 700;
    color: var(--white);
}

@media (max-width: 768px) {
    .footer {
        padding: 1.5rem 0;
        font-size: 0.875rem;
    }
}

/* =============================================
   Print Styles
   ============================================= */

@media print {
    .navbar,
    .btn,
    .page-header,
    .footer {
        display: none;
    }

    body {
        background: white;
    }

    .card {
        box-shadow: none;
        border: 1px solid var(--gray-300);
    }
}