/* styles.css */
:root {
    --primary: #88CFE0;
    --primary-dark: #6bb4c9;
    --secondary: #DB473C;
    --secondary-dark: #c0392b;
    --neutral: #949699;
    --dark: #2d3748;
    --light: #f8f9fa;
    --success: #38b000;
    --error: #e63946;
    --card-bg: #ffffff;
    --table-header: #88CFE0;
    --table-hover: rgba(136, 207, 224, 0.1);
    --warning-bg: #fff3cd;
    --warning-border: #ffc107;
    --gris: #e8ecf0;
}

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

body {
    font-family: 'Roboto', sans-serif;
    background-color: #f5f7fa;
    color: var(--dark);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header-container {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    border-bottom: 4px solid var(--primary);
    padding: 0.5rem 0;
}

.institutional-header {
    display: flex;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

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

.logo-img {
    height: 60px;
    margin-right: 1rem;
    transition: transform 0.3s ease;
}

.logo-img:hover {
    transform: scale(1.05);
}

.institutional-title {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    color: var(--dark);
    font-size: 1.4rem;
    border-left: 2px solid var(--neutral);
    padding-left: 1rem;
}

/* Main content */
.main-container {
    flex: 1;
    padding: 2rem 1rem;
}

/* Search page specific */
.search-container {
    width: 100%;
    text-align: center;
}

.certificate-card {
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    padding: 2.5rem;
    width: 100%;
    max-width: 600px;
    margin: 2rem auto;
    position: relative;
    overflow: hidden;
    border-top: 4px solid var(--primary);
    border-bottom: 4px solid var(--primary);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.certificate-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
}

h1 {
    font-family: 'Montserrat', sans-serif;
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--dark);
    font-weight: 700;
    position: relative;
    padding-bottom: 0.5rem;
    text-align: center;
}

h1:after {
    content: '';
    position: absolute;
    width: 80px;
    height: 4px;
    background: var(--secondary);
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 2px;
}

.page-title {
    font-family: 'Montserrat', sans-serif;
    font-size: 2rem;
    color: var(--dark);
    text-align: center;
    margin-bottom: 1.5rem;
    position: relative;
}

.page-title:after {
    content: '';
    position: absolute;
    width: 80px;
    height: 4px;
    background: var(--secondary);
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 2px;
}

.description {
    color: var(--neutral);
    margin-bottom: 2rem;
    font-size: 1rem;
    line-height: 1.7;
    text-align: center;
}

.input-group {
    position: relative;
    margin-bottom: 1.5rem;
}

.input-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--primary);
    font-size: 1.2rem;
}

.form-input {
    width: 100%;
    padding: 1rem 1rem 1rem 3.5rem;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s;
    background-color: white;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(136, 207, 224, 0.2);
}

/* Results page specific */
.results-card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    border-top: 4px solid var(--primary);
    border-bottom: 4px solid var(--primary);
}

.user-info-card {
    background: var(--gris);
    padding: 1.5rem;
    border-radius: 8px;
    margin: 2rem 0;
    text-align: center;
    border-right: 4px solid var(--primary);
    border-left: 4px solid var(--primary);
}

.table-container {
    overflow-x: auto;
    margin: 2rem 0;
}

.certificates-table {
    width: 100%;
    border-collapse: collapse;
    border-width: 2px;
    background: white;
}

.certificates-table th {
    background: var(--primary);
    color: white;
    padding: 1rem;
    font-family: 'Montserrat', sans-serif;
}

.certificates-table td {
    padding: 1rem;
    border-bottom: 1px solid #eee;
}

/* Buttons */
.institutional-btn, .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2.5rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
    font-family: 'Montserrat', sans-serif;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    cursor: pointer;
    border: none;
    font-size: 1rem;
    position: relative;
    overflow: hidden;
}

.institutional-btn {
    background: linear-gradient(to right, var(--primary), #6bb4c9);
    color: white;
    box-shadow: 0 4px 15px rgba(136, 207, 224, 0.3);
    width: 100%;
}

.institutional-btn:hover {
    background: linear-gradient(to right, #7ac0d4, var(--primary));
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(136, 207, 224, 0.4);
}

.institutional-btn:active {
    transform: translateY(0);
}

.institutional-btn:disabled {
    background: var(--neutral);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

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

.btn-secondary:hover {
    background: var(--secondary-dark);
    transform: translateY(-2px);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin: 2rem 0;
}

.page-btn {
    padding: 0.5rem 1rem;
    border-radius: 6px;
    border: 1px solid #ddd;
    background: white;
    cursor: pointer;
    transition: all 0.3s;
}

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

.page-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* Messages */
.error-message {
    color: var(--error);
    font-size: 0.9rem;
    margin-top: 0.5rem;
    display: none;
    text-align: left;
    padding-left: 0.5rem;
    animation: fadeIn 0.3s;
}

.no-results {
    background: var(--warning-bg);
    padding: 1.5rem;
    border-radius: 8px;
    text-align: center;
    border-right: 4px solid var(--warning-border);
    border-left: 4px solid var(--warning-border);
}

/* Footer */
.institutional-footer {
    background: var(--dark);
    color: white;
    padding: 1rem 0;
    text-align: center;
}

.footer-logo {
    height: 50px;
    filter: brightness(0) invert(1);
    transition: transform 0.3s ease;
}

.footer-logo:hover {
    transform: scale(1.05);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.copyright {
    margin-top: 0.5rem;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsive */
@media (max-width: 768px) {
    .institutional-header {
        flex-direction: column;
        text-align: center;
    }
    
    .logo-img {
        margin-bottom: 0.5rem;
        margin-right: 0;
    }
    
    .institutional-title {
        border-left: none;
        padding-left: 0;
        border-top: 2px solid var(--neutral);
        padding-top: 1rem;
    }
    
    .certificate-card, .results-card {
        padding: 1.5rem;
    }
    
    h1, .page-title {
        font-size: 1.6rem;
    }
    
    .user-info-card div {
        flex-direction: column;
        gap: 0.5rem;
    }
}