/* RAKTAMRIT - Enhanced Stylesheet with Gradients */

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

:root {
    --primary-gradient: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    --secondary-gradient: linear-gradient(135deg, #8b0000 0%, #5a0000 100%);
    --success-gradient: linear-gradient(135deg, #56ab2f 0%, #a8e063 100%);
    --warning-gradient: linear-gradient(135deg, #f2994a 0%, #f2c94c 100%);
    --danger-gradient: linear-gradient(135deg, #eb3349 0%, #f45c43 100%);
    --info-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --hero-gradient: linear-gradient(135deg, #e74c3c 0%, #c0392b 50%, #8b0000 100%);
    --card-gradient: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    --dark-gradient: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    
    --primary-color: #e74c3c;
    --secondary-color: #c0392b;
    --success-color: #56ab2f;
    --warning-color: #f2994a;
    --danger-color: #eb3349;
    --info-color: #667eea;
    --light-bg: #f8f9fa;
    --dark-text: #2c3e50;
    --border-color: #e0e0e0;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.16);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--dark-text);
    background: linear-gradient(to bottom, #ffffff 0%, #f8f9fa 100%);
    min-height: 100vh;
}

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

/* Header */
header {
    background: var(--primary-gradient);
    color: white;
    padding: 1rem 0;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    font-size: 1.8rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.site-logo {
    height: 50px;
    width: auto;
    object-fit: contain;
}

.site-logo-text {
    font-size: 1.8rem;
    font-weight: 700;
}

header nav ul {
    list-style: none;
    display: flex;
    gap: 2rem;
}

header nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    position: relative;
}

header nav a:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

header nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: white;
    transition: var(--transition);
    transform: translateX(-50%);
}

header nav a:hover::after {
    width: 80%;
}

/* Hero Section with Animated Background */
.hero {
    background: var(--hero-gradient);
    color: white;
    padding: 5rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

/* Animated blood drops background */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

/* Animated particles */
.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 0;
}

.particle {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: float 15s infinite ease-in-out;
}

.particle:nth-child(1) {
    width: 80px;
    height: 80px;
    left: 10%;
    animation-delay: 0s;
    animation-duration: 12s;
}

.particle:nth-child(2) {
    width: 60px;
    height: 60px;
    left: 30%;
    animation-delay: 2s;
    animation-duration: 15s;
}

.particle:nth-child(3) {
    width: 100px;
    height: 100px;
    left: 50%;
    animation-delay: 4s;
    animation-duration: 18s;
}

.particle:nth-child(4) {
    width: 70px;
    height: 70px;
    left: 70%;
    animation-delay: 1s;
    animation-duration: 14s;
}

.particle:nth-child(5) {
    width: 90px;
    height: 90px;
    left: 85%;
    animation-delay: 3s;
    animation-duration: 16s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(100vh) scale(0);
        opacity: 0;
    }
    10% {
        opacity: 0.3;
    }
    90% {
        opacity: 0.3;
    }
    50% {
        transform: translateY(-20vh) scale(1);
        opacity: 0.5;
    }
}

/* Pulse animation for blood drops */
.blood-drop {
    position: absolute;
    width: 20px;
    height: 20px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50% 50% 50% 0;
    transform: rotate(-45deg);
    animation: pulse 3s infinite ease-in-out;
}

.blood-drop:nth-child(6) {
    left: 15%;
    top: 20%;
    animation-delay: 0.5s;
}

.blood-drop:nth-child(7) {
    left: 45%;
    top: 40%;
    animation-delay: 1.5s;
}

.blood-drop:nth-child(8) {
    left: 75%;
    top: 30%;
    animation-delay: 2.5s;
}

@keyframes pulse {
    0%, 100% {
        transform: rotate(-45deg) scale(1);
        opacity: 0.2;
    }
    50% {
        transform: rotate(-45deg) scale(1.2);
        opacity: 0.4;
    }
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
    animation: fadeInUp 0.8s ease-out;
}

.hero p {
    font-size: 1.4rem;
    margin-bottom: 2rem;
    position: relative;
    z-index: 1;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.2);
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 600;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
    background: var(--primary-gradient);
    color: white;
    border-color: transparent;
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

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

.btn-success:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

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

.btn-warning:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

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

.btn-danger:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

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

.btn-info:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    border-radius: 25px;
}

.btn:active {
    transform: translateY(-1px);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

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

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 1rem;
    transition: var(--transition);
    background: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(231, 76, 60, 0.1);
    transform: translateY(-2px);
}

.form-group input:hover,
.form-group select:hover,
.form-group textarea:hover {
    border-color: var(--primary-color);
}

.form-group small {
    display: block;
    margin-top: 0.5rem;
    color: #6c757d;
    font-size: 0.875rem;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.form-section {
    background: var(--card-gradient);
    padding: 2rem;
    border-radius: 16px;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.form-section:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.form-section h3 {
    margin-bottom: 1.5rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.5rem;
    font-weight: 700;
}

/* Search Section */
.search-section {
    padding: 4rem 0;
    background: linear-gradient(to bottom, #f8f9fa 0%, #ffffff 100%);
}

.search-form {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.search-form:hover {
    box-shadow: var(--shadow-lg);
}

/* Donor Gallery */
.donor-gallery {
    padding: 4rem 0;
}

.donor-gallery h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.donor-card {
    background: white;
    border-radius: 20px;
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.donor-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: var(--transition);
}

.donor-card:hover::before {
    transform: scaleX(1);
}

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

.donor-card img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 1rem;
    border: 4px solid transparent;
    background: var(--primary-gradient);
    padding: 4px;
    transition: var(--transition);
}

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

.donor-card .no-photo {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: var(--primary-gradient);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    margin: 0 auto 1rem;
    font-weight: bold;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.donor-card:hover .no-photo {
    transform: scale(1.05);
}

.donor-card h3 {
    margin-bottom: 0.5rem;
}

.donor-card .blood-group {
    font-size: 1.5rem;
    font-weight: bold;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0.5rem 0;
}

/* Cards */
.card {
    background: white;
    border-radius: 20px;
    padding: 2.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.card h2 {
    margin-bottom: 1.5rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.75rem;
    font-weight: 700;
}

/* Tables */
.table-responsive {
    overflow-x: auto;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.data-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.data-table th,
.data-table td {
    padding: 1.25rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background: var(--card-gradient);
    font-weight: 700;
    color: var(--dark-text);
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 0.5px;
    position: sticky;
    top: 0;
    z-index: 10;
}

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

.data-table tbody tr:hover {
    background: linear-gradient(to right, rgba(231, 76, 60, 0.05), transparent);
    transform: scale(1.01);
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

.table-photo {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
}

.table-no-photo {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

/* Status Badges */
.status-active {
    background: var(--success-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.status-suspended {
    background: var(--danger-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.status-pending {
    background: var(--warning-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.blood-badge {
    background: var(--primary-gradient);
    color: white;
    padding: 0.4rem 1rem;
    border-radius: 25px;
    font-weight: 700;
    display: inline-block;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.blood-badge:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

/* Alerts */
.alert {
    padding: 1.25rem 1.5rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    border-left: 4px solid;
    box-shadow: var(--shadow-sm);
    animation: slideInDown 0.5s ease-out;
}

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

.alert-success {
    background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
    color: #155724;
    border-left-color: var(--success-color);
}

.alert-error {
    background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
    color: #721c24;
    border-left-color: var(--danger-color);
}

.alert-warning {
    background: linear-gradient(135deg, #fff3cd 0%, #ffeaa7 100%);
    color: #856404;
    border-left-color: var(--warning-color);
}

.alert-info {
    background: linear-gradient(135deg, #d1ecf1 0%, #bee5eb 100%);
    color: #0c5460;
    border-left-color: var(--info-color);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.modal-content {
    background: white;
    margin: 5% auto;
    padding: 3rem;
    border-radius: 24px;
    max-width: 600px;
    position: relative;
    box-shadow: var(--shadow-lg);
    animation: slideInDown 0.4s ease-out;
}

.close {
    position: absolute;
    right: 1.5rem;
    top: 1.5rem;
    font-size: 2rem;
    cursor: pointer;
    color: #6c757d;
    transition: var(--transition);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.close:hover {
    background: var(--danger-gradient);
    color: white;
    transform: rotate(90deg);
}

/* Admin Layout */
.admin-layout {
    display: flex;
    min-height: calc(100vh - 60px);
}

.admin-sidebar {
    width: 280px;
    background: var(--dark-gradient);
    color: white;
    padding: 2rem 0;
    box-shadow: var(--shadow-md);
}

.admin-sidebar ul {
    list-style: none;
}

.admin-sidebar a {
    display: block;
    color: white;
    text-decoration: none;
    padding: 1rem 2rem;
    transition: var(--transition);
    border-left: 4px solid transparent;
    position: relative;
}

.admin-sidebar a:hover {
    background: rgba(255,255,255,0.1);
    border-left-color: var(--primary-color);
    padding-left: 2.5rem;
}

.admin-sidebar a.active {
    background: rgba(231, 76, 60, 0.2);
    border-left-color: var(--primary-color);
}

.admin-content {
    flex: 1;
    padding: 2rem;
    background: var(--light-bg);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: var(--transition);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: var(--primary-gradient);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.stat-card h3 {
    color: #6c757d;
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-number {
    font-size: 3.5rem;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

/* Footer */
footer {
    background: var(--dark-gradient);
    color: white;
    padding: 3rem 0;
    text-align: center;
    margin-top: 4rem;
    box-shadow: 0 -4px 16px rgba(0,0,0,0.1);
}

footer p {
    margin: 0.5rem 0;
}

footer a {
    color: white;
    text-decoration: none;
    transition: var(--transition);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

footer a:hover {
    background: rgba(255,255,255,0.1);
    color: var(--primary-color);
}

/* Loading Spinner */
.loading-spinner {
    border: 4px solid rgba(231, 76, 60, 0.1);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin: 2rem auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

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

.pagination a {
    padding: 0.75rem 1.25rem;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    text-decoration: none;
    color: var(--dark-text);
    transition: var(--transition);
    font-weight: 600;
}

.pagination a:hover {
    background: var(--primary-gradient);
    color: white;
    border-color: transparent;
    transform: translateY(-2px);
}

.pagination a.active {
    background: var(--primary-gradient);
    color: white;
    border-color: transparent;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* Image Preview */
.image-preview {
    max-width: 200px;
    max-height: 200px;
    margin-top: 1rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

/* Profile Photo */
.profile-photo {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid transparent;
    background: var(--primary-gradient);
    padding: 4px;
}

.profile-photo-large {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    border: 6px solid transparent;
    background: var(--primary-gradient);
    padding: 6px;
    box-shadow: var(--shadow-md);
}

/* Blood Group Chart */
.blood-group-chart {
    padding: 1rem 0;
}

.blood-group-bar {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.blood-group-label {
    min-width: 60px;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.bar-container {
    flex: 1;
    height: 30px;
    background: var(--light-bg);
    border-radius: 15px;
    overflow: hidden;
}

.bar {
    height: 100%;
    background: var(--primary-gradient);
    border-radius: 15px;
    transition: width 1s ease-out;
}

.blood-group-count {
    min-width: 50px;
    text-align: right;
    font-weight: 700;
}

/* Mobile-Friendly Enhancements */
@media (max-width: 1024px) {
    .hero {
        padding: 4rem 0;
    }
    
    .particle {
        display: none; /* Hide particles on tablets for performance */
    }
}

@media (max-width: 768px) {
    .hero {
        padding: 3rem 0;
    }
    
    .hero h1 {
        font-size: 2.5rem;
        line-height: 1.2;
    }
    
    .hero p {
        font-size: 1.1rem;
        padding: 0 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
        padding: 0 1rem;
    }
    
    .hero-buttons .btn {
        width: 100%;
        padding: 1rem 2rem;
        font-size: 1.1rem;
    }
    
    .admin-layout {
        flex-direction: column;
    }
    
    .admin-sidebar {
        width: 100%;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 1.5rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .data-table {
        font-size: 0.875rem;
    }
    
    .data-table th,
    .data-table td {
        padding: 0.75rem 0.5rem;
    }
    
    header h1 {
        font-size: 1.5rem;
    }
    
    .site-logo {
        height: 40px;
    }
    
    header nav ul {
        flex-wrap: wrap;
        gap: 0.5rem;
        font-size: 0.9rem;
    }
    
    .search-form {
        padding: 1.5rem;
    }
    
    .donor-card {
        padding: 1.5rem;
    }
    
    .blood-drop {
        display: none; /* Hide blood drops on mobile */
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 2rem 0;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .card {
        padding: 1.5rem;
        border-radius: 16px;
    }
    
    .modal-content {
        margin: 10% 5%;
        padding: 2rem;
        border-radius: 16px;
    }
    
    header h1 {
        font-size: 1.3rem;
    }
    
    .site-logo {
        height: 35px;
    }
    
    header nav ul {
        gap: 0.25rem;
        font-size: 0.85rem;
    }
    
    header nav a {
        padding: 0.4rem 0.6rem;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.95rem;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 0.75rem;
        font-size: 0.95rem;
    }
}

/* Touch-friendly improvements */
@media (hover: none) and (pointer: coarse) {
    .btn {
        min-height: 44px;
        min-width: 44px;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        min-height: 44px;
        font-size: 16px; /* Prevents zoom on iOS */
    }
    
    header nav a {
        min-height: 44px;
        display: flex;
        align-items: center;
    }
}