/* Blood Bank Management System - Main Stylesheet */

/* ============ Global Styles ============ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #dc3545;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --white: #ffffff;
    --text-color: #333333;
    --border-color: #dee2e6;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.15);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #f5f5f5;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ============ Landing Page Styles ============ */
.landing-page {
    min-height: 100vh;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, #dc3545 0%, #c82333 100%);
    color: var(--white);
    box-shadow: var(--shadow);
}

.navbar .logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.3s;
}

.nav-links a:hover {
    opacity: 0.8;
}

.btn-login, .btn-register {
    padding: 0.6rem 1.5rem;
    border-radius: 25px;
    background: var(--white);
    color: var(--primary-color);
    font-weight: 600;
}

.btn-register {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

.hero-section {
    text-align: center;
    padding: 8rem 2rem;
    background: linear-gradient(135deg, #dc3545 0%, #c82333 100%);
    color: var(--white);
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero-content p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn {
    padding: 0.8rem 2rem;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s;
}

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

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

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

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

.about-section {
    padding: 5rem 2rem;
    text-align: center;
    background: var(--white);
}

.about-section h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.about-section p {
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

.features-section {
    padding: 5rem 2rem;
    background: var(--light-color);
}

.features-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--primary-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

footer {
    background: var(--dark-color);
    color: var(--white);
    text-align: center;
    padding: 2rem;
}

/* ============ Authentication Styles ============ */
.auth-container {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    background: linear-gradient(135deg, #dc3545 0%, #c82333 100%);
}

.auth-box {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 500px;
}

.register-box {
    max-width: 600px;
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-header h1 {
    color: var(--primary-color);
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.auth-header h2 {
    color: var(--text-color);
    font-size: 1.3rem;
    font-weight: 500;
}

.auth-form {
    margin-top: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.1);
}

.form-group small {
    display: block;
    margin-top: 0.3rem;
    color: var(--secondary-color);
    font-size: 0.875rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: normal;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
}

.btn-block {
    width: 100%;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.auth-footer {
    text-align: center;
    margin-top: 1.5rem;
}

.auth-footer p {
    margin: 0.5rem 0;
}

.auth-footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.auth-footer a:hover {
    text-decoration: underline;
}

/* ============ Dashboard Styles ============ */
.dashboard-container {
    display: flex;
    min-height: 100vh;
    background: #f5f5f5;
}

.sidebar {
    width: 260px;
    background: linear-gradient(180deg, #dc3545 0%, #c82333 100%);
    color: var(--white);
    padding: 0;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-header {
    padding: 2rem 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.sidebar-header h2 {
    font-size: 1.5rem;
}

.sidebar-nav {
    padding: 1rem 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    color: var(--white);
    text-decoration: none;
    transition: background 0.3s;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.1);
}

.nav-icon {
    font-size: 1.3rem;
}

.main-content {
    flex: 1;
    padding: 0;
}

.dashboard-header {
    background: var(--white);
    padding: 1.5rem 2rem;
    box-shadow: var(--shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.dashboard-header h1 {
    font-size: 1.8rem;
    color: var(--primary-color);
}

.user-info {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.btn-logout {
    background: var(--danger-color);
    color: var(--white);
    padding: 0.6rem 1.5rem;
    border-radius: 5px;
    text-decoration: none;
}

.btn-logout:hover {
    background: #c82333;
}

.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    padding: 0 2rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.stat-icon {
    font-size: 3rem;
    color: var(--primary-color);
}

.stat-details h3 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 0.3rem;
}

.stat-details p {
    color: var(--secondary-color);
    font-size: 1rem;
}

.dashboard-content {
    padding: 0 2rem 2rem 2rem;
}

.content-section {
    background: var(--white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

.content-section h2 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.content-wrapper {
    padding: 0 2rem 2rem 2rem;
}

.form-card, .table-card, .profile-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

.form-card h2, .table-card h2, .profile-card h2 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

/* ============ Table Styles ============ */
.table-container {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
}

.data-table thead {
    background: var(--light-color);
}

.data-table th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-color);
    border-bottom: 2px solid var(--border-color);
}

.data-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.data-table tbody tr:hover {
    background: var(--light-color);
}

.text-center {
    text-align: center !important;
}

/* ============ Badge Styles ============ */
.badge {
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 600;
    display: inline-block;
}

.badge-pending {
    background: #fff3cd;
    color: #856404;
}

.badge-approved {
    background: #d4edda;
    color: #155724;
}

.badge-rejected {
    background: #f8d7da;
    color: #721c24;
}

.badge-low {
    background: #d1ecf1;
    color: #0c5460;
}

.badge-medium {
    background: #fff3cd;
    color: #856404;
}

.badge-high {
    background: #f8d7da;
    color: #721c24;
}

.badge-critical {
    background: #dc3545;
    color: var(--white);
}

.badge-completed {
    background: #28a745;
    color: var(--white);
}

.badge-reviewed {
    background: #17a2b8;
    color: var(--white);
}

.badge-resolved {
    background: #28a745;
    color: var(--white);
}

/* ============ Alert Styles ============ */
.alert {
    padding: 1rem 1.5rem;
    border-radius: 5px;
    margin: 1rem 2rem;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* ============ Button Variants ============ */
.btn-success {
    background: var(--success-color);
    color: var(--white);
}

.btn-success:hover {
    background: #218838;
}

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

.btn-danger:hover {
    background: #c82333;
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.875rem;
}

/* ============ Profile Styles ============ */
.profile-container {
    padding: 0 2rem 2rem 2rem;
}

.profile-form input[disabled],
.profile-form select[disabled],
.profile-form textarea[disabled] {
    background: var(--light-color);
    cursor: not-allowed;
}

/* ============ Donation & Order Forms ============ */
.donation-info, .info-text {
    background: var(--light-color);
    padding: 1rem;
    border-radius: 5px;
    margin: 1rem 0;
}

.donation-info h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.donation-info ul {
    margin-left: 1.5rem;
}

.donation-info li {
    margin: 0.3rem 0;
}

/* ============ Feedback Styles ============ */
.feedback-item {
    background: var(--light-color);
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
}

.feedback-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.feedback-header h3 {
    color: var(--primary-color);
    font-size: 1.3rem;
}

.feedback-meta {
    display: flex;
    gap: 2rem;
    margin-bottom: 1rem;
    color: var(--secondary-color);
    font-size: 0.9rem;
}

.feedback-message, .admin-response {
    margin: 1rem 0;
}

.admin-response {
    background: var(--white);
    padding: 1rem;
    border-radius: 5px;
    border-left: 4px solid var(--primary-color);
}

.response-form {
    margin-top: 1rem;
}

/* ============ Modal Styles ============ */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-content {
    background: var(--white);
    padding: 2rem;
    border-radius: 10px;
    max-width: 500px;
    width: 90%;
}

.modal-content h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.modal-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

/* ============ Responsive Styles ============ */
@media (max-width: 768px) {
    .dashboard-container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .dashboard-stats {
        grid-template-columns: 1fr;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .nav-links {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
}