:root {
    color-scheme: dark;
    --bg-color: #0f172a;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #3b82f6;
    --accent-hover: #2563eb;
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --error-color: #ef4444;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start; /* Allows tall content to scroll properly from the top */
    padding: 3rem 1rem;
    position: relative;
    overflow-x: hidden;
    overflow-y: auto;
}

/* Background animated elements for aesthetics */
.background-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.6;
    animation: float 10s infinite ease-in-out alternate;
}

.blob-1 {
    width: 400px;
    height: 400px;
    background: #3b82f6;
    top: -100px;
    left: -100px;
    animation-delay: 0s;
}

.blob-2 {
    width: 300px;
    height: 300px;
    background: #8b5cf6;
    bottom: -50px;
    right: -100px;
    animation-delay: -5s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(30px, 50px) scale(1.1); }
}

/* Glassmorphism Container */
.glass-container {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 2.5rem;
    width: 100%;
    max-width: 440px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    transform: translateY(0);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.glass-container.dashboard {
    max-width: 1000px; /* Widened for more columns */
}

.glass-container:hover {
    box-shadow: 0 30px 60px -12px rgba(0, 0, 0, 0.6);
}

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

header h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(to right, #fff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

header p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Form Styles */
.input-group {
    margin-bottom: 1.5rem;
    text-align: left;
}

.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.input-group input {
    width: 100%;
    padding: 0.85rem 1rem;
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
    transition: all 0.3s ease;
}

.input-group input:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
}

/* Adjust date input icon color (removed filter since color-scheme dark handles it) */

.error-message {
    color: var(--error-color);
    font-size: 0.85rem;
    margin-bottom: 1rem;
    min-height: 20px;
    text-align: center;
}

/* Buttons */
.primary-btn, .secondary-btn {
    width: 100%;
    padding: 0.85rem;
    border-radius: 12px;
    border: none;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
}

.primary-btn {
    background: var(--accent-color);
    color: white;
    box-shadow: 0 4px 14px 0 rgba(59, 130, 246, 0.39);
}

.primary-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px 0 rgba(59, 130, 246, 0.39);
}

.secondary-btn {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
}

.secondary-btn:hover {
    background: rgba(255, 255, 255, 0.15);
}

/* Dashboard specific */
.hidden {
    display: none !important;
}

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

.dashboard-header h1 {
    text-align: left;
}

#logout-btn {
    width: auto;
    padding: 0.6rem 1.5rem;
}

/* Summary Cards */
.summary-cards {
    display: flex;
    gap: 1.5rem;
    margin: 2rem 0;
}

.summary-card {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    background: rgba(15, 23, 42, 0.4);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.summary-card:hover {
    background: rgba(15, 23, 42, 0.6);
    transform: translateY(-2px);
}

.card-icon {
    width: 50px;
    height: 50px;
    background: rgba(59, 130, 246, 0.2);
    color: var(--accent-color);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
}

.card-content h3 {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.card-content p {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
}

.data-section {
    margin-top: 2rem;
}

.data-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin: 1.5rem 0;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex: 1;
}

.filter-group input, .filter-group select {
    padding: 0.85rem 1rem;
    background-color: rgba(15, 23, 42, 0.5);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    color: var(--text-primary);
    outline: none;
    font-size: 0.95rem;
    -webkit-appearance: none;
}

.filter-group input:focus, .filter-group select:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
}

.filter-group select {
    appearance: none;
    cursor: pointer;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1em;
    padding-right: 2.5rem;
}

.filter-group select option {
    background-color: var(--bg-color);
}

.btn-group {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.btn-group button {
    width: auto;
    padding: 0.85rem 1.5rem;
}

/* Table styling */
.table-container {
    overflow-x: auto;
    overflow-y: auto;
    max-height: 400px; /* Internal scroll for the table */
    border-radius: 12px;
    border: 1px solid var(--glass-border);
    background: rgba(15, 23, 42, 0.3);
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

th, td {
    padding: 1rem;
    border-bottom: 1px solid var(--glass-border);
}

th {
    background: rgba(30, 41, 59, 0.95);
    font-weight: 600;
    color: var(--text-secondary);
    position: sticky;
    top: 0;
    z-index: 10;
}

tr:last-child td {
    border-bottom: none;
}

tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

.empty-state {
    text-align: center;
    color: var(--text-secondary);
    padding: 2rem;
    font-style: italic;
}

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

.icon-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    border-radius: 6px;
    padding: 0.4rem 0.8rem;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s ease;
}

.icon-btn.edit:hover {
    background: var(--accent-color);
    border-color: var(--accent-color);
}

.icon-btn.delete:hover {
    background: var(--error-color);
    border-color: var(--error-color);
}

/* Modal Styles */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    z-index: 100;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.modal-backdrop.hidden {
    opacity: 0;
    pointer-events: none;
}

.modal-content {
    max-width: 500px;
    margin: 1rem;
    transform: translateY(0) scale(1);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-backdrop.hidden .modal-content {
    transform: translateY(20px) scale(0.95);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.modal-header h2 {
    font-size: 1.5rem;
    margin-bottom: 0;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.8rem;
    cursor: pointer;
    transition: color 0.3s ease;
    line-height: 1;
}

.close-btn:hover {
    color: var(--text-primary);
}

.modal-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

/* Loader */
.loader {
    width: 18px;
    height: 18px;
    border: 3px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

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