/* Task Grid Layout */
.task-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
}

/* Search and Filter Section */
.search-filter-section {
    position: sticky;
    top: 80px;
    z-index: var(--z-above);
    background: var(--glass-background);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-md);
}

.search-container {
    position: relative;
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
}

.search-input {
    width: 100%;
    padding: 1rem 1.25rem 1rem 3rem;
    background: var(--background-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: var(--font-size-md);
    transition: all var(--transition-normal);
}

.search-input:hover {
    border-color: var(--border-color-hover);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px hsla(var(--primary-hue), var(--primary-saturation), 50%, 0.15);
}

.search-container::before {
    content: '🔍';
    position: absolute;
    left: var(--spacing-lg);
    top: 50%;
    transform: translateY(-50%);
    font-size: var(--font-size-lg);
    pointer-events: none;
}

/* Filter Tags */
.filter-tags-container {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    justify-content: center;
    padding: var(--spacing-md) 0;
}

.filter-menu-toggle,
.filter-tag {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-full);
    font-size: var(--font-size-md);
    font-weight: 500;
    color: var(--text-primary);
    background: var(--background-secondary);
    border: 2px solid var(--border-color);
    cursor: pointer;
    transition: all var(--transition-normal);
    overflow: hidden;
}

.filter-menu-toggle {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    padding: 0.875rem 1.5rem;
}

.filter-menu-toggle .toggle-content {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.filter-menu-toggle .toggle-arrow {
    margin-left: 0.5rem;
    font-size: 0.75rem;
    transition: transform var(--transition-normal);
}

.filter-menu-toggle.active .toggle-arrow {
    transform: rotate(180deg);
}

.filter-tag::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg,
        rgba(var(--primary-hue), var(--primary-saturation), 50%, 0.1),
        rgba(var(--accent-hue), 85%, 50%, 0.1)
    );
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.filter-tag:hover {
    transform: translateY(-2px);
    border-color: var(--primary-color);
    box-shadow: 
        0 8px 25px rgba(var(--primary-hue), var(--primary-saturation), 50%, 0.15),
        0 3px 6px rgba(0, 0, 0, 0.05);
}

.filter-tag:hover::before {
    opacity: 1;
}

.filter-tag.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary);
}

.filter-tag .filter-icon {
    font-size: 1.2em;
    transition: transform var(--transition-normal);
}

.filter-tag:hover .filter-icon {
    transform: scale(1.2) rotate(-10deg);
}

/* Filter-specific colors */
.filter-tag[data-filter="all"] {
    --filter-color: 79, 70, 229;  /* Indigo */
    background: rgba(var(--filter-color), 0.15);
    color: rgb(var(--filter-color));
    border-color: rgba(var(--filter-color), 0.4);
}

.filter-tag[data-filter="ongoing"] {
    --filter-color: 45, 212, 191;  /* Teal */
    background: rgba(var(--filter-color), 0.15);
    color: rgb(var(--filter-color));
    border-color: rgba(var(--filter-color), 0.4);
}

.filter-tag[data-filter="newest"] {
    --filter-color: 139, 92, 246;  /* Purple */
    background: rgba(var(--filter-color), 0.15);
    color: rgb(var(--filter-color));
    border-color: rgba(var(--filter-color), 0.4);
}

.filter-tag[data-filter="oldest"] {
    --filter-color: 99, 102, 241;  /* Blue */
    background: rgba(var(--filter-color), 0.15);
    color: rgb(var(--filter-color));
    border-color: rgba(var(--filter-color), 0.4);
}

.filter-tag[data-filter="high"] {
    --filter-color: 239, 68, 68;  /* Red */
    background: rgba(var(--filter-color), 0.15);
    color: rgb(var(--filter-color));
    border-color: rgba(var(--filter-color), 0.4);
}

.filter-tag[data-filter="urgent"] {
    --filter-color: 245, 158, 11;  /* Amber */
    background: rgba(var(--filter-color), 0.15);
    color: rgb(var(--filter-color));
    border-color: rgba(var(--filter-color), 0.4);
}

.filter-tag[data-filter="completed"] {
    --filter-color: 16, 185, 129;  /* Emerald */
    background: rgba(var(--filter-color), 0.15);
    color: rgb(var(--filter-color));
    border-color: rgba(var(--filter-color), 0.4);
}

/* Dark theme adjustments */
.dark-theme .filter-tag {
    background: rgba(var(--filter-color), 0.2);
}

.dark-theme .filter-tag::before {
    opacity: 0.5;
    background: linear-gradient(
        135deg,
        rgba(var(--filter-color), 0.25),
        rgba(var(--filter-color), 0.2)
    );
}

.dark-theme .filter-tag:hover {
    background: rgba(var(--filter-color), 0.3);
}

.dark-theme .filter-tag:hover::before {
    opacity: 0.8;
}

.dark-theme .filter-tag.active {
    background: rgb(var(--filter-color));
    color: black !important;
}

.dark-theme .filter-tag.active .filter-icon {
    color: black !important;
}

@keyframes filterPulse {
    0% {
        box-shadow: 
            0 4px 12px rgba(var(--filter-color), 0.3),
            inset 0 2px 4px rgba(255, 255, 255, 0.2);
    }
    50% {
        box-shadow: 
            0 4px 20px rgba(var(--filter-color), 0.5),
            inset 0 2px 4px rgba(255, 255, 255, 0.3);
    }
    100% {
        box-shadow: 
            0 4px 12px rgba(var(--filter-color), 0.3),
            inset 0 2px 4px rgba(255, 255, 255, 0.2);
    }
}

/* Task Card Styles */
.task-card {
    background: var(--surface1);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

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

.task-card-header {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
}

.task-title-group {
    flex: 1;
    min-width: 0;
}

.task-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text1);
    margin-bottom: 0.5rem;
}

.task-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono, monospace);
    font-size: 0.85rem;
    color: #9333EA;
    font-weight: 600;
    background: linear-gradient(135deg, rgba(147, 51, 234, 0.1), rgba(192, 132, 252, 0.1));
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    min-width: 2.5rem;
}

[data-theme="dark"] .task-number {
    color: #C084FC;
    background: linear-gradient(135deg, rgba(147, 51, 234, 0.2), rgba(192, 132, 252, 0.2));
}

.task-dates {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    font-size: 0.85rem;
    color: var(--text3);
}

.task-created-at,
.task-completed-at {
    display: inline-flex;
    align-items: center;
}

.task-description {
    color: var(--text2);
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: 1rem;
}

.task-card.completed .task-title {
    text-decoration: line-through;
    opacity: 0.75;
}

/* Task Container */
.task-container {
    padding: var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
}

/* Create Task Card */
.create-task-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--glass-shadow);
    margin-bottom: var(--spacing-xl);
}

.section-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text1);
    margin-bottom: var(--spacing-lg);
}

/* Main Content Layout */
.main-content {
    padding: var(--spacing-2xl) var(--spacing-xl);
    max-width: 1200px;
    margin: 80px auto 0; /* Add top margin for navigation */
    min-height: calc(100vh - 80px);
    display: flex;
    flex-direction: column;
}

/* Task Form */
.task-form {
    background: var(--glass-background);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

/* Form Header */
.form-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.form-header h1 {
    font-size: var(--font-size-2xl);
    color: var(--text-primary);
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: var(--spacing-md);
}

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

.form-group label {
    display: block;
    color: var(--text-primary);
    font-weight: 600;
    font-size: var(--font-size-md);
    margin-bottom: var(--spacing-sm);
}

/* Title Row */
.title-row {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--spacing-md);
    align-items: start;
}

/* Form Controls */
input[type="text"],
textarea {
    width: 100%;
    padding: 1rem 1.25rem;
    background: var(--background-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: var(--font-size-md);
    transition: all var(--transition-normal);
}

input[type="text"]:hover,
textarea:hover {
    border-color: var(--border-color-hover);
}

input[type="text"]:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px hsla(var(--primary-hue), var(--primary-saturation), 50%, 0.15);
}

textarea {
    min-height: 120px;
    resize: vertical;
    line-height: 1.6;
}

/* Create Button */
.create-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: var(--font-size-md);
    cursor: pointer;
    transition: all var(--transition-bounce);
    box-shadow: var(--shadow-primary);
    position: relative;
    overflow: hidden;
}

.create-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        120deg,
        transparent,
        rgba(255, 255, 255, 0.3),
        transparent
    );
    transition: 0.6s;
}

.create-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(var(--primary-hue), var(--primary-saturation), 50%, 0.3);
}

.create-btn:hover::before {
    left: 100%;
}

.create-btn .btn-icon {
    font-size: 1.2em;
    transition: transform var(--transition-normal);
}

.create-btn:hover .btn-icon {
    transform: rotate(-10deg) scale(1.2);
}

/* Priority Section */
.priority-section {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
    margin: var(--spacing-2xl) 0;
}

.priority-group {
    background: var(--background-secondary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-color);
}

.priority-group h3 {
    color: var(--text-primary);
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.priority-buttons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

/* Priority Buttons */
.priority-btn {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    background: var(--background-primary);
    border: 2px solid var(--border-color);
    color: var(--text-primary);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
    overflow: hidden;
}

.priority-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1));
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.priority-btn:hover::before {
    opacity: 1;
}

.priority-btn .priority-icon {
    font-size: 1.2em;
    transition: transform var(--transition-normal);
}

.priority-btn:hover .priority-icon {
    transform: scale(1.2) rotate(-10deg);
}

/* Priority Button States */
.priority-btn[data-priority="high"] {
    color: #ef4444;
}

.priority-btn[data-priority="low"] {
    color: #10b981;
}

.priority-btn[data-priority="urgent"] {
    color: #f59e0b;
}

.priority-btn[data-priority="not-urgent"] {
    color: #3b82f6;
}

input[type="radio"]:checked + .priority-btn[data-priority="high"] {
    background: linear-gradient(135deg, #ef4444, #f87171);
    color: white;
    border-color: #ef4444;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
}

input[type="radio"]:checked + .priority-btn[data-priority="low"] {
    background: linear-gradient(135deg, #10b981, #34d399);
    color: white;
    border-color: #10b981;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

input[type="radio"]:checked + .priority-btn[data-priority="urgent"] {
    background: linear-gradient(135deg, #f59e0b, #fbbf24);
    color: white;
    border-color: #f59e0b;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
}

input[type="radio"]:checked + .priority-btn[data-priority="not-urgent"] {
    background: linear-gradient(135deg, #3b82f6, #60a5fa);
    color: white;
    border-color: #3b82f6;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

/* Hide Radio Inputs */
input[type="radio"] {
    display: none;
}

/* Last Added Task Section */
.last-task-section {
    margin-top: var(--spacing-2xl);
    background: var(--background-secondary);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.last-task-section h3 {
    padding: var(--spacing-lg);
    color: var(--text-primary);
    font-weight: 600;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.last-task-container {
    padding: var(--spacing-xl);
}

.no-task-message {
    text-align: center;
    color: var(--text-secondary);
    font-size: var(--font-size-md);
    padding: var(--spacing-xl);
}

/* Error Container */
.error-container {
    margin-top: var(--spacing-lg);
}

.error-message {
    padding: var(--spacing-md) var(--spacing-lg);
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: var(--radius-lg);
    color: #ef4444;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

/* Responsive Design */
@media (max-width: 768px) {
    .main-content {
        padding: var(--spacing-lg);
        margin-top: 64px;
    }

    .task-form {
        padding: var(--spacing-lg);
    }

    .priority-section {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        margin: var(--spacing-lg) 0;
    }

    .priority-group {
        padding: var(--spacing-md);
    }

    .priority-group h3 {
        font-size: var(--font-size-md);
        margin-bottom: var(--spacing-md);
    }

    .priority-buttons {
        gap: var(--spacing-sm);
    }

    .priority-btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }

    .title-row {
        grid-template-columns: 1fr;
    }

    .create-btn {
        width: 100%;
    }

    .search-filter-section {
        position: relative;
        top: 0;
        margin: var(--spacing-lg);
        padding: var(--spacing-md);
    }

    .filter-tags-container {
        justify-content: flex-start;
        padding: var(--spacing-md) 0 0;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }

    .filter-tags-container::-webkit-scrollbar {
        display: none;
    }

    .filter-tag {
        white-space: nowrap;
    }
}

@media (max-width: 480px) {
    .main-content {
        padding: var(--spacing-md);
    }

    .task-form {
        padding: var(--spacing-md);
    }

    .form-header h1 {
        font-size: var(--font-size-xl);
    }

    .priority-section {
        gap: var(--spacing-sm);
        margin: var(--spacing-md) 0;
    }

    .priority-group {
        padding: var(--spacing-sm);
    }

    .priority-buttons {
        grid-template-columns: 1fr;
    }

    .priority-btn {
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .search-filter-section {
        margin: var(--spacing-md);
    }

    .search-input {
        padding: 0.875rem 1rem 0.875rem 2.5rem;
        font-size: var(--font-size-sm);
    }

    .search-container::before {
        left: var(--spacing-md);
        font-size: var(--font-size-md);
    }

    .filter-menu-toggle,
    .filter-tag {
        padding: 0.625rem 1rem;
        font-size: var(--font-size-sm);
    }
}