:root {
    --primary-color: #ba4949;
    /* Work Red */
    --secondary-color: #38858a;
    /* Short Break Green */
    --tertiary-color: #397097;
    /* Long Break Blue */
    --bg-color: #ffffff;
    --text-color: #2d3748;
    --card-bg: rgba(255, 255, 255, 0.9);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --transition: all 0.3s ease;
}

[data-theme="dark"] {
    --primary-color: #2d1f1f;
    /* Dark Red for Work */
    --secondary-color: #1f2d2a;
    /* Dark Green for Short Break */
    --tertiary-color: #1f262d;
    /* Dark Blue for Long Break */
    --bg-color: #1a202c;
    --text-color: #f7fafc;
    --card-bg: rgba(26, 32, 44, 0.9);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--primary-color);
    color: var(--text-color);
    transition: background-color 0.5s ease, color 0.3s ease;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.app-container {
    width: 100%;
    max-width: 480px;
    padding: 20px;
    background-color: var(--card-bg);
    border-radius: 12px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
    margin: 20px;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 5px;
}

h1 {
    font-size: 1.5rem;
    font-weight: 700;
}

.icon-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--text-color);
    padding: 8px;
    border-radius: 50%;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

.icon-btn:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

.mode-selector {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 30px;
    background-color: rgba(0, 0, 0, 0.05);
    padding: 5px;
    border-radius: 25px;
}

.mode-btn {
    background: none;
    border: none;
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    font-weight: 500;
    color: var(--text-color);
    transition: var(--transition);
    opacity: 0.7;
}

.mode-btn.disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.mode-btn.active {
    background-color: var(--bg-color);
    opacity: 1;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    font-weight: 700;
}

.timer-display {
    text-align: center;
    font-size: 6rem;
    font-weight: 700;
    margin: 20px 0;
    font-variant-numeric: tabular-nums;
    letter-spacing: -2px;
}

.timer-controls {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 30px;
}

button {
    font-family: inherit;
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.primary-btn {
    background-color: var(--text-color);
    color: var(--bg-color);
    border: none;
    padding: 15px 40px;
    font-size: 1.2rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: transform 0.1s ease, box-shadow 0.2s ease;
}

.primary-btn:active {
    transform: scale(0.98);
}

.secondary-btn {
    background: none;
    border: 2px solid rgba(0, 0, 0, 0.1);
    color: var(--text-color);
    padding: 15px 20px;
    font-size: 1rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

.secondary-btn:hover {
    border-color: var(--text-color);
}

.task-section {
    margin-bottom: 20px;
    text-align: center;
}

.input-group input {
    width: 100%;
    padding: 15px;
    border: none;
    background-color: rgba(0, 0, 0, 0.05);
    border-radius: 8px;
    font-size: 1.1rem;
    text-align: center;
    color: var(--text-color);
    margin-bottom: 10px;
}

.input-group input:focus {
    outline: 2px solid var(--text-color);
    background-color: var(--bg-color);
}

.cycle-count {
    font-size: 0.9rem;
    opacity: 0.8;
}

.settings-section {
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    padding-top: 20px;
    margin-bottom: 20px;
}

.text-btn {
    background: none;
    border: none;
    color: var(--text-color);
    cursor: pointer;
    font-size: 0.9rem;
    opacity: 0.6;
    display: flex;
    align-items: center;
    gap: 5px;
    margin: 0 auto;
}

.text-btn:hover {
    opacity: 1;
}

.text-btn.danger {
    color: #e53e3e;
}

.settings-panel {
    margin-top: 15px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    animation: slideDown 0.3s ease-out;
}

.settings-panel.hidden {
    display: none;
}

.setting-item {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.setting-item label {
    font-size: 0.8rem;
    opacity: 0.8;
}

.setting-item input {
    padding: 8px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 4px;
    background-color: var(--bg-color);
    color: var(--text-color);
}

.setting-item input[type="range"] {
    width: 100%;
    margin-top: 5px;
    cursor: pointer;
}

.log-section {
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    padding-top: 20px;
}

.log-section h3 {
    font-size: 1rem;
    margin-bottom: 10px;
    opacity: 0.8;
}

#log-list {
    list-style: none;
    max-height: 200px;
    overflow-y: auto;
}

.log-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    font-size: 0.9rem;
    gap: 10px;
}

.log-item span:first-child {
    font-weight: 500;
    flex: 1;
}

.log-item .log-meta {
    opacity: 0.6;
    font-size: 0.8rem;
    white-space: nowrap;
}

.delete-log-btn {
    background: none;
    border: none;
    color: var(--text-color);
    opacity: 0.2;
    cursor: pointer;
    font-size: 1.2rem;
    padding: 0 5px;
    line-height: 1;
    transition: var(--transition);
}

.delete-log-btn:hover {
    opacity: 0.6;
    color: #e53e3e;
}

/* Log Controls */
.log-controls {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 15px;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

footer {
    margin-top: 30px;
    text-align: center;
    font-size: 0.8rem;
    opacity: 0.6;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    padding-top: 15px;
}

footer p {
    margin-bottom: 5px;
}

.ai-note {
    font-size: 0.7rem;
    opacity: 0.8;
}

.time-inputs {
    display: flex;
    gap: 5px;
    align-items: center;
}

.time-inputs input {
    width: 60px;
    text-align: center;
}

.setting-item-checkbox {
    grid-column: 1 / -1;
}

.setting-item-checkbox label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.setting-item-checkbox input[type="checkbox"] {
    width: auto;
    cursor: pointer;
}

/* Notification Toast */
.notification-toast {
    position: fixed;
    top: 80px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 16px 24px;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3), 0 6px 12px rgba(0, 0, 0, 0.2);
    z-index: 1000;
    min-width: 300px;
    max-width: 90%;
    animation: slideIn 0.3s ease-out;
}

.notification-toast.hidden {
    display: none;
}

.notification-toast.fade-out {
    animation: fadeOut 0.3s ease-out forwards;
}

.notification-content {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.1rem;
    font-weight: 600;
}

.notification-content i {
    font-size: 1.5rem;
    color: #4ade80;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(-30px);
    }

    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
    }

    to {
        opacity: 0;
        transform: translateX(-50%) translateY(-20px);
    }
}

/* Privacy Policy Link */
.privacy-link {
    font-size: 0.7rem;
    color: var(--text-color);
    text-decoration: none;
    opacity: 0.5;
    transition: opacity 0.2s ease;
}

.privacy-link:hover {
    opacity: 0.8;
    text-decoration: underline;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    padding: 10px;
}

.modal.hidden {
    display: none;
}

.modal-content {
    background-color: var(--card-bg);
    border-radius: 12px;
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    flex-shrink: 0;
}

.modal-header h2 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--text-color);
}

.close-btn {
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--text-color);
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color 0.2s ease;
}

.close-btn:hover {
    background-color: rgba(0, 0, 0, 0.1);
    cursor: pointer;
}

.modal-body {
    padding: 20px;
    overflow-y: auto;
    color: var(--text-color);
    flex-grow: 1;
}

.modal-body h3 {
    font-size: 1.1rem;
    margin-top: 20px;
    margin-bottom: 10px;
    color: var(--text-color);
}

.modal-body h3:first-child {
    margin-top: 0;
}

.modal-body p {
    margin-bottom: 10px;
    line-height: 1.6;
}

.modal-body ul {
    margin-left: 20px;
    margin-bottom: 15px;
    line-height: 1.8;
}

.modal-body li {
    margin-bottom: 5px;
}

.update-date {
    margin-top: 30px;
    font-size: 0.9rem;
    opacity: 0.7;
    text-align: right;
}

/* Mobile adjustments */

.setting-item-checkbox label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.setting-item-checkbox input[type="checkbox"] {
    width: auto;
    cursor: pointer;
}

.cycle-input {
    font-size: inherit;
    font-family: inherit;
    color: inherit;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--text-color);
    width: 50px;
    text-align: center;
    outline: none;
}