/* Flado - Modern Todo App Styles */

:root {
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --radius: 8px;
    --transition: all 0.2s ease;
}

[data-theme="dark"] {
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --bg-primary: #111827;
    --bg-secondary: #1f2937;
    --border-color: #374151;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    line-height: 1.6;
    min-height: 100vh;
}

.app-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 1rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

.app-title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.app-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
}

.app-main {
    flex: 1;
}

.app-footer {
    text-align: center;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Controls Bar */
.controls-bar {
    margin-bottom: 1.5rem;
}

.search-box {
    position: relative;
    margin-bottom: 1rem;
}

.search-input {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.search-clear {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.25rem 0.5rem;
}

.filter-tabs {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.filter-tab {
    padding: 0.5rem 1rem;
    text-decoration: none;
    color: var(--text-secondary);
    border-radius: var(--radius);
    transition: var(--transition);
    font-size: 0.875rem;
    font-weight: 500;
}

.filter-tab:hover {
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

.filter-tab.active {
    background-color: var(--primary-color);
    color: white;
}

/* Quick Add Form */
.quick-add-form {
    background-color: var(--bg-primary);
    border-radius: var(--radius);
    padding: 1rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.task-form {
    display: flex;
    gap: 0.5rem;
}

.task-input {
    flex: 1;
    padding: 0.75rem;
    font-size: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    transition: var(--transition);
}

.task-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.add-button {
    padding: 0.75rem 1.5rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-size: 1.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    line-height: 1;
}

.add-button:hover {
    background-color: var(--primary-hover);
}

.task-details-expand {
    margin-top: 0.75rem;
}

.expand-button {
    background: transparent;
    border: 1.5px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
}

.expand-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.125rem;
    height: 1.125rem;
    font-size: 1rem;
    font-weight: 300;
    line-height: 1;
    transition: var(--transition);
}

.expand-button:hover {
    background-color: var(--bg-secondary);
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.expand-button:hover .expand-icon {
    transform: rotate(90deg);
}

.expand-button:active {
    transform: translateY(0);
}

.expand-button:active .expand-icon {
    transform: rotate(90deg) scale(0.95);
}

.task-details-form {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.task-description-input,
.task-due-date-input {
    width: 100%;
    padding: 0.75rem;
    margin-bottom: 0.75rem;
    font-size: 0.875rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    font-family: inherit;
}

.task-description-input:focus,
.task-due-date-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-actions {
    display: flex;
    gap: 0.5rem;
    justify-content: flex-end;
}

/* Task List */
.task-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.task-item {
    background-color: var(--bg-primary);
    border-radius: var(--radius);
    padding: 1rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    cursor: move;
}

.task-item:hover {
    box-shadow: var(--shadow-md);
}

.task-item.completed {
    opacity: 0.7;
}

.task-item.completed .task-title {
    text-decoration: line-through;
    color: var(--text-secondary);
}

.task-item.dragging {
    opacity: 0.5;
}

.task-checkbox {
    margin-top: 0.25rem;
}

.task-check {
    width: 1.25rem;
    height: 1.25rem;
    cursor: pointer;
    accent-color: var(--primary-color);
}

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

.task-main {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.task-title-wrapper {
    flex: 1;
    min-width: 200px;
}

.task-title {
    width: 100%;
    font-size: 1rem;
    font-weight: 500;
    border: none;
    background: transparent;
    color: var(--text-primary);
    padding: 0.25rem 0;
    cursor: text;
}

.task-title:focus {
    outline: none;
    background-color: var(--bg-secondary);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

.task-title[readonly] {
    cursor: default;
}

.task-description {
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.task-tags {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
    flex-wrap: wrap;
}

.task-tag {
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
}

.due-date-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
}

.due-date-badge.overdue {
    background-color: var(--danger-color);
    color: white;
}

.task-actions {
    display: flex;
    gap: 0.5rem;
    opacity: 0;
    transition: var(--transition);
}

.task-item:hover .task-actions {
    opacity: 1;
}

.task-edit,
.task-delete {
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.25rem;
    transition: var(--transition);
}

.task-edit:hover {
    color: var(--primary-color);
}

.task-delete:hover {
    color: var(--danger-color);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-secondary);
}

.empty-message {
    font-size: 1.125rem;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background-color: var(--bg-primary);
    border-radius: var(--radius);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.25rem;
}

.modal-body {
    padding: 1.5rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    font-size: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.save-button,
.cancel-button {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

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

.save-button:hover {
    background-color: var(--primary-hover);
}

.cancel-button {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

.cancel-button:hover {
    background-color: var(--border-color);
}

/* Delete Confirmation Modal */
.delete-modal-content {
    max-width: 400px;
    text-align: center;
}

.delete-modal-icon {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 80px;
    height: 80px;
    margin: 2rem auto 1rem;
    background-color: rgba(239, 68, 68, 0.1);
    border-radius: 50%;
    color: var(--danger-color);
}

.delete-modal-body {
    padding: 0 2rem 2rem;
}

.delete-modal-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.delete-modal-message {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.delete-modal-actions {
    justify-content: center;
    gap: 0.75rem;
}

.delete-confirm-button {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    background-color: var(--danger-color);
    color: white;
}

.delete-confirm-button:hover {
    background-color: #dc2626;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.delete-confirm-button:active {
    transform: translateY(0);
}

@media (max-width: 640px) {
    .app-container {
        padding: 1rem 0.5rem;
    }

    .app-title {
        font-size: 2rem;
    }

    .task-item {
        padding: 0.75rem;
    }

    .task-actions {
        opacity: 1;
    }

    .task-main {
        flex-direction: column;
        align-items: flex-start;
    }

    .task-title-wrapper {
        min-width: 100%;
    }
}