/* TimerForge Web Timer - Pomofocus Style */

:root {
    --primary: #00ff99;
    --primary-dark: #00cc77;
    --dark-bg: #0f172a;
    --darker-bg: #020617;
    --card-bg: #1e293b;
    --border: #334155;
    --light-text: #f8fafc;
    --gray-text: #94a3b8;
    --danger: #ef4444;

    /* Mode colors */
    --pomodoro: #00ff99;
    --pomodoro-bg: #0a2e1f;
    --short-break: #38bdf8;
    --short-break-bg: #0c1e2e;
    --long-break: #a78bfa;
    --long-break-bg: #1a1530;

    /* Active mode (set by JS) */
    --mode-color: var(--pomodoro);
    --mode-bg: var(--pomodoro-bg);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--dark-bg);
    color: var(--light-text);
    min-height: 100vh;
    transition: background 0.4s ease;
}

body.mode-pomodoro { --mode-color: var(--pomodoro); --mode-bg: var(--pomodoro-bg); }
body.mode-short-break { --mode-color: var(--short-break); --mode-bg: var(--short-break-bg); }
body.mode-long-break { --mode-color: var(--long-break); --mode-bg: var(--long-break-bg); }

/* Header */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 620px;
    margin: 0 auto;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--light-text);
    text-decoration: none;
}

.logo-icon {
    font-size: 1.4rem;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 6px;
}

.header-btn {
    background: rgba(255, 255, 255, 0.08);
    border: none;
    color: var(--light-text);
    padding: 8px 14px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    transition: background 0.2s;
    display: flex;
    align-items: center;
    gap: 6px;
}

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

.header-btn svg {
    width: 16px;
    height: 16px;
}

/* Main Content */
.main {
    max-width: 480px;
    margin: 0 auto;
    padding: 30px 20px;
}

/* Timer Card */
.timer-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 30px 20px;
    text-align: center;
    border: 1px solid var(--border);
    transition: border-color 0.3s;
}

/* Mode Tabs */
.mode-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 30px;
}

.mode-tab {
    background: transparent;
    border: none;
    color: var(--gray-text);
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.2s;
}

.mode-tab:hover {
    color: var(--light-text);
}

.mode-tab.active {
    background: var(--mode-color);
    color: var(--dark-bg);
    font-weight: 600;
}

/* Timer Display */
.timer-display {
    font-size: 7rem;
    font-weight: 700;
    font-family: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
    letter-spacing: -2px;
    margin: 10px 0 30px;
    color: var(--light-text);
    line-height: 1;
    user-select: none;
}

/* Timer Controls */
.timer-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
}

.btn-start {
    background: var(--light-text);
    color: var(--dark-bg);
    border: none;
    padding: 14px 52px;
    border-radius: 8px;
    font-size: 1.3rem;
    font-weight: 700;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 4px;
    transition: transform 0.15s, box-shadow 0.15s;
    min-width: 200px;
}

.btn-start:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(255, 255, 255, 0.15);
}

.btn-start:active {
    transform: translateY(0);
}

.btn-skip {
    background: transparent;
    border: none;
    color: var(--gray-text);
    cursor: pointer;
    padding: 8px;
    border-radius: 6px;
    transition: color 0.2s;
    opacity: 0;
    pointer-events: none;
}

.btn-skip:hover {
    color: var(--light-text);
}

.btn-skip svg {
    width: 24px;
    height: 24px;
}

.btn-skip.visible {
    opacity: 1;
    pointer-events: auto;
}

/* Pomodoro Counter */
.pomodoro-counter {
    margin-top: 20px;
    color: var(--gray-text);
    font-size: 0.9rem;
}

.pomodoro-counter span {
    color: var(--mode-color);
    font-weight: 600;
}

/* Tasks Section */
.tasks-section {
    margin-top: 30px;
}

.tasks-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--border);
}

.tasks-title {
    font-size: 1.1rem;
    font-weight: 600;
}

.tasks-summary {
    color: var(--gray-text);
    font-size: 0.85rem;
}

/* Task Item */
.task-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 12px;
}

.task-item {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 14px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    transition: border-color 0.2s;
    position: relative;
}

.task-item:hover {
    border-color: var(--mode-color);
}

.task-item.active {
    border-left: 3px solid var(--mode-color);
}

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

.task-checkbox {
    appearance: none;
    -webkit-appearance: none;
    width: 22px;
    height: 22px;
    border: 2px solid var(--border);
    border-radius: 50%;
    cursor: pointer;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    background: transparent;
}

.task-checkbox:checked {
    background: var(--mode-color);
    border-color: var(--mode-color);
}

.task-checkbox:checked::after {
    content: '✓';
    color: var(--dark-bg);
    font-size: 14px;
    font-weight: 700;
}

.task-text {
    flex: 1;
    font-size: 0.95rem;
}

.task-pomodoros {
    color: var(--gray-text);
    font-size: 0.8rem;
    white-space: nowrap;
}

.task-delete {
    background: none;
    border: none;
    color: var(--gray-text);
    cursor: pointer;
    padding: 4px;
    opacity: 0;
    transition: opacity 0.2s, color 0.2s;
    font-size: 1.1rem;
}

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

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

/* Add Task */
.add-task-btn {
    width: 100%;
    padding: 14px;
    border: 2px dashed var(--border);
    border-radius: 8px;
    background: transparent;
    color: var(--gray-text);
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s;
}

.add-task-btn:hover {
    border-color: var(--mode-color);
    color: var(--light-text);
}

/* Add Task Form */
.add-task-form {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    display: none;
}

.add-task-form.visible {
    display: block;
}

.add-task-form input[type="text"] {
    width: 100%;
    padding: 12px;
    background: var(--dark-bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--light-text);
    font-size: 1rem;
    outline: none;
    margin-bottom: 12px;
}

.add-task-form input[type="text"]:focus {
    border-color: var(--mode-color);
}

.add-task-form input[type="text"]::placeholder {
    color: var(--gray-text);
}

.pomodoro-est {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
    color: var(--gray-text);
    font-size: 0.85rem;
}

.pomodoro-est label {
    font-weight: 500;
}

.est-controls {
    display: flex;
    align-items: center;
    gap: 6px;
}

.est-controls button {
    background: var(--dark-bg);
    border: 1px solid var(--border);
    color: var(--light-text);
    width: 28px;
    height: 28px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.est-controls button:hover {
    border-color: var(--mode-color);
}

.est-controls span {
    min-width: 24px;
    text-align: center;
    color: var(--light-text);
    font-weight: 600;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

.btn-cancel {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--gray-text);
    padding: 8px 20px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
}

.btn-cancel:hover {
    color: var(--light-text);
}

.btn-save {
    background: var(--mode-color);
    border: none;
    color: var(--dark-bg);
    padding: 8px 20px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
}

.btn-save:hover {
    opacity: 0.9;
}

/* Modals */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 100;
    justify-content: center;
    align-items: flex-start;
    padding: 60px 20px;
    overflow-y: auto;
}

.modal-overlay.visible {
    display: flex;
}

.modal {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 28px;
    width: 100%;
    max-width: 440px;
    position: relative;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.modal-title {
    font-size: 1.15rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: var(--gray-text);
    cursor: pointer;
    font-size: 1.5rem;
    line-height: 1;
    padding: 4px;
}

.modal-close:hover {
    color: var(--light-text);
}

/* Settings Modal */
.setting-group {
    margin-bottom: 20px;
}

.setting-group label {
    display: block;
    font-size: 0.85rem;
    color: var(--gray-text);
    margin-bottom: 6px;
    font-weight: 500;
}

.setting-group input[type="number"],
.setting-group select {
    width: 100%;
    padding: 10px 12px;
    background: var(--dark-bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--light-text);
    font-size: 0.95rem;
    outline: none;
}

.setting-group input[type="number"]:focus,
.setting-group select:focus {
    border-color: var(--mode-color);
}

.setting-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 12px;
}

.setting-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 0;
}

.setting-toggle span {
    font-size: 0.95rem;
}

/* Toggle Switch */
.toggle {
    position: relative;
    width: 44px;
    height: 24px;
    flex-shrink: 0;
}

.toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    inset: 0;
    background: var(--border);
    border-radius: 12px;
    cursor: pointer;
    transition: background 0.3s;
}

.toggle-slider::before {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    background: var(--light-text);
    border-radius: 50%;
    top: 3px;
    left: 3px;
    transition: transform 0.3s;
}

.toggle input:checked + .toggle-slider {
    background: var(--mode-color);
}

.toggle input:checked + .toggle-slider::before {
    transform: translateX(20px);
}

.btn-save-settings {
    width: 100%;
    padding: 12px;
    background: var(--mode-color);
    border: none;
    border-radius: 6px;
    color: var(--dark-bg);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    margin-top: 10px;
}

.btn-save-settings:hover {
    opacity: 0.9;
}

/* Report Modal */
.report-stat {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

.report-stat:last-child {
    border-bottom: none;
}

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

.report-stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--mode-color);
}

.report-chart {
    margin-top: 20px;
}

.report-chart-title {
    font-size: 0.9rem;
    color: var(--gray-text);
    margin-bottom: 12px;
}

.chart-bars {
    display: flex;
    align-items: flex-end;
    gap: 6px;
    height: 120px;
    padding: 0 4px;
}

.chart-bar-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    height: 100%;
    justify-content: flex-end;
}

.chart-bar {
    width: 100%;
    background: var(--mode-color);
    border-radius: 3px 3px 0 0;
    min-height: 2px;
    opacity: 0.7;
    transition: opacity 0.2s;
}

.chart-bar:hover {
    opacity: 1;
}

.chart-bar-label {
    font-size: 0.7rem;
    color: var(--gray-text);
}

.chart-bar-count {
    font-size: 0.7rem;
    color: var(--gray-text);
}

/* Sign In Modal */
.auth-form {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.auth-form input {
    width: 100%;
    padding: 12px;
    background: var(--dark-bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--light-text);
    font-size: 0.95rem;
    outline: none;
}

.auth-form input:focus {
    border-color: var(--mode-color);
}

.auth-form input::placeholder {
    color: var(--gray-text);
}

.btn-auth {
    width: 100%;
    padding: 12px;
    background: var(--mode-color);
    border: none;
    border-radius: 6px;
    color: var(--dark-bg);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
}

.btn-auth:hover {
    opacity: 0.9;
}

.auth-toggle {
    text-align: center;
    color: var(--gray-text);
    font-size: 0.85rem;
    margin-top: 4px;
}

.auth-toggle a {
    color: var(--mode-color);
    cursor: pointer;
    text-decoration: none;
}

.auth-toggle a:hover {
    text-decoration: underline;
}

.auth-error {
    color: var(--danger);
    font-size: 0.85rem;
    display: none;
}

.auth-error.visible {
    display: block;
}

/* User menu (when signed in) */
.user-menu {
    display: none;
    align-items: center;
    gap: 8px;
}

.user-menu.visible {
    display: flex;
}

.user-name {
    font-size: 0.85rem;
    color: var(--gray-text);
}

/* Notification */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--card-bg);
    border: 1px solid var(--mode-color);
    color: var(--light-text);
    padding: 12px 20px;
    border-radius: 8px;
    font-size: 0.9rem;
    z-index: 200;
    transform: translateX(120%);
    transition: transform 0.3s ease;
}

.notification.visible {
    transform: translateX(0);
}

/* Responsive */
@media (max-width: 520px) {
    .header {
        padding: 12px 16px;
    }

    .header-btn span {
        display: none;
    }

    .main {
        padding: 20px 16px;
    }

    .timer-display {
        font-size: 5rem;
    }

    .mode-tab {
        padding: 6px 12px;
        font-size: 0.85rem;
    }

    .btn-start {
        padding: 12px 36px;
        font-size: 1.1rem;
        letter-spacing: 3px;
    }

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

@media (max-width: 360px) {
    .timer-display {
        font-size: 4rem;
    }
}