/* TaskReminder - CSS Styles */
:root {
    /* Primary Colors - Blue & White Theme */
    --primary-blue: #2c5aa0;
    --primary-blue-light: #4a6fa5;
    --primary-blue-dark: #1a3d7a;
    --white: #ffffff;
    --off-white: #f8f9fa;
    --light-gray: #e9ecef;
    --medium-gray: #adb5bd;
    --dark-gray: #495057;
    /* Accent Color - Purple */
    --accent-purple: #6d5baa;
    --accent-purple-light: #8a7bc9;
    --accent-purple-dark: #524785;
    /* Status Colors */
    --priority-critical: #e74c3c;
    --priority-high: #e67e22;
    --priority-medium: #f1c40f;
    --priority-low: #2ecc71;
    --completed: #27ae60;
    --pending: #3498db;
    /* Shadows & Borders */
    --shadow: 0 6px 15px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 10px 25px rgba(0, 0, 0, 0.12);
    --border-radius: 12px;
    --border-radius-sm: 8px;
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
    color: var(--dark-gray);
    line-height: 1.6;
    min-height: 100vh;
    padding: var(--spacing-sm);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-md);
}

/* Typography */
h1, h2, h3, h4 {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    color: var(--primary-blue-dark);
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

h1 i {
    color: var(--accent-purple);
}

.subtitle {
    font-size: 1.1rem;
    color: var(--medium-gray);
    margin-bottom: var(--spacing-lg);
}

h2 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

h2 i {
    color: var(--primary-blue);
}

/* Card Layout */
.card {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

/* Main Content Layout */
.main-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

@media (max-width: 1100px) {
    .main-content {
        grid-template-columns: 1fr;
    }
}

/* Form Styles */
.form-group {
    margin-bottom: var(--spacing-md);
}

label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--primary-blue-dark);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

input, textarea, select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1.5px solid var(--light-gray);
    border-radius: var(--border-radius-sm);
    font-family: 'Roboto', sans-serif;
    font-size: 1rem;
    transition: border 0.3s, box-shadow 0.3s;
    background-color: var(--off-white);
}

input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(44, 90, 160, 0.2);
}

textarea {
    min-height: 100px;
    resize: vertical;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius-sm);
    font-family: 'Poppins', sans-serif;
    font-weight: 500;
    font-size: 1rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(to right, var(--primary-blue), var(--primary-blue-light));
    color: var(--white);
}

.btn-primary:hover {
    background: linear-gradient(to right, var(--primary-blue-dark), var(--primary-blue));
    box-shadow: 0 4px 12px rgba(44, 90, 160, 0.3);
}

.btn-secondary {
    background: var(--light-gray);
    color: var(--dark-gray);
}

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

.btn-danger {
    background: linear-gradient(to right, #e74c3c, #c0392b);
    color: var(--white);
}

.btn-danger:hover {
    background: linear-gradient(to right, #c0392b, #a93226);
    box-shadow: 0 4px 12px rgba(231, 76, 60, 0.3);
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

#task-form .btn, #alarm-form .btn {
    margin-right: var(--spacing-sm);
    margin-top: var(--spacing-xs);
}

/* Task List */
.task-stats {
    display: flex;
    justify-content: space-around;
    background: var(--off-white);
    border-radius: var(--border-radius-sm);
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.stat {
    text-align: center;
}

.stat-count {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-blue);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--medium-gray);
}

.search-box {
    position: relative;
    margin-bottom: var(--spacing-md);
}

.search-box i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--medium-gray);
}

.search-box input {
    padding-left: 3rem;
}

/* Task Items */
.task-item {
    background: var(--off-white);
    border-left: 4px solid var(--pending);
    border-radius: var(--border-radius-sm);
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

.task-item.completed {
    border-left-color: var(--completed);
    opacity: 0.8;
    background: #f0fff4;
}

.task-item.high {
    border-left-color: var(--priority-high);
}

.task-item.critical {
    border-left-color: var(--priority-critical);
}

.task-item.medium {
    border-left-color: var(--priority-medium);
}

.task-item.low {
    border-left-color: var(--priority-low);
}

.task-content {
    flex: 1;
    padding-right: var(--spacing-sm);
}

.task-title {
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
    color: var(--primary-blue-dark);
}

.task-desc {
    color: var(--medium-gray);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.task-meta {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    font-size: 0.85rem;
}

.task-meta span {
    background: var(--white);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

.task-actions {
    display: flex;
    gap: var(--spacing-xs);
}

.task-actions button {
    padding: 0.5rem;
    border-radius: 6px;
    border: none;
    background: var(--white);
    color: var(--dark-gray);
    cursor: pointer;
    transition: all 0.2s;
}

.task-actions button:hover {
    background: var(--primary-blue);
    color: var(--white);
}

.task-actions .delete-btn:hover {
    background: var(--priority-critical);
    color: var(--white);
}

/* Alarm Items */
.alarm-item {
    background: linear-gradient(135deg, #f8f9ff 0%, #edf0ff 100%);
    border-left: 4px solid var(--accent-purple);
    border-radius: var(--border-radius-sm);
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.alarm-content h4 {
    margin-bottom: 0.25rem;
    color: var(--accent-purple-dark);
}

.alarm-time {
    font-weight: 600;
    color: var(--primary-blue);
    font-size: 1.2rem;
}

.alarm-label {
    color: var(--medium-gray);
    font-size: 0.9rem;
}

.alarm-actions button {
    padding: 0.5rem;
    border-radius: 6px;
    border: none;
    background: var(--white);
    color: var(--dark-gray);
    cursor: pointer;
    transition: all 0.2s;
}

.alarm-actions button:hover {
    background: var(--accent-purple);
    color: var(--white);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
}

.stat-card {
    background: var(--off-white);
    border-radius: var(--border-radius-sm);
    padding: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
}

.stat-content {
    flex: 1;
}

.stat-number {
    display: block;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-blue-dark);
}

.stat-text {
    font-size: 0.9rem;
    color: var(--medium-gray);
}

/* Filter Buttons */
.controls {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.5rem 1rem;
    border: 1.5px solid var(--light-gray);
    background: var(--white);
    border-radius: 20px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s;
}

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

.filter-btn:hover:not(.active) {
    background: var(--light-gray);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
    color: var(--medium-gray);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    color: var(--light-gray);
}

.empty-state h3 {
    margin-bottom: 0.5rem;
    color: var(--dark-gray);
}

/* Footer */
footer {
    text-align: center;
    padding: var(--spacing-md);
    color: var(--medium-gray);
    border-top: 1px solid var(--light-gray);
    margin-top: var(--spacing-lg);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
    flex-wrap: wrap;
}

/* Notification Area */
#notification-area {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 300px;
    z-index: 1000;
}

.notification {
    background: var(--white);
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-hover);
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    border-left: 4px solid var(--accent-purple);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

.notification i {
    font-size: 1.5rem;
    color: var(--accent-purple);
}

.notification-content h4 {
    margin-bottom: 0.25rem;
    font-size: 1rem;
}

.notification-content p {
    font-size: 0.9rem;
    color: var(--medium-gray);
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: var(--spacing-sm);
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .main-content {
        gap: var(--spacing-md);
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .card-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .controls {
        width: 100%;
        justify-content: flex-start;
    }
    
    .footer-links {
        flex-direction: column;
        align-items: center;
    }
}

/* Priority Badges */
.priority-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
}

.priority-critical { background: #ffebee; color: #c62828; }
.priority-high { background: #fff3e0; color: #ef6c00; }
.priority-medium { background: #fff9c4; color: #f9a825; }
.priority-low { background: #e8f5e9; color: #2e7d32; }

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--light-gray);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-blue);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-blue-dark);
}