:root {
    --primary-color: #6c63ff;
    --secondary-color: #a5a4ff;
    --accent-color: #ff6584;
    --background-color: #f8f9fa;
    --card-color: #ffffff;
    --text-color: #333333;
    --text-light: #777777;
    --success-color: #4caf50;
    --warning-color: #ff9800;
    --error-color: #f44336;
    --border-radius: 12px;
    --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;

    /* Dark mode colors */
    --dark-primary-color: #7c73ff;
    --dark-secondary-color: #9594ff;
    --dark-accent-color: #ff7594;
    --dark-background-color: #121212;
    --dark-card-color: #1e1e1e;
    --dark-text-color: #f0f0f0;
    --dark-text-light: #aaaaaa;
}

/* Screen readers only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.main-nav {
    background-color: var(--card-color);
    box-shadow: var(--box-shadow);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
}

.nav-links a:hover {
    color: var(--primary-color);
    background-color: rgba(108, 99, 255, 0.1);
}

.nav-links a.active {
    color: var(--primary-color);
    font-weight: 600;
}

main {
    flex: 1;
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    padding-bottom: 4rem;
}

footer {
    text-align: center;
    padding: 1.5rem;
    color: var(--text-light);
    font-size: 0.9rem;
    background-color: var(--card-color);
    margin-top: auto;
}

/* Home Page Styles */
.home-container {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.hero {
    text-align: center;
    padding: 4rem 2rem;
    background: linear-gradient(135deg, rgba(108, 99, 255, 0.1), rgba(255, 101, 132, 0.1));
    border-radius: var(--border-radius);
    margin-top: 1rem;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.hero p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 2rem;
    color: var(--text-color);
}

.cta-button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0.8rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 8px rgba(108, 99, 255, 0.3);
}

.cta-button:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(108, 99, 255, 0.3);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.feature-card {
    background-color: var(--card-color);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

/* Todo Page Styles */
.todo-container {
    max-width: 800px;
    margin: 0 auto;
}

.date-display {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
    text-align: center;
}

.progress-container {
    margin: 2rem 0;
    background-color: #e0e0e0;
    border-radius: var(--border-radius);
    height: 10px;
    position: relative;
}

.progress-bar {
    height: 100%;
    border-radius: var(--border-radius);
    background-color: var(--primary-color);
    width: 0%;
    transition: width 0.5s ease;
}

.progress-text {
    position: absolute;
    top: -30px;
    right: 0;
    font-size: 0.9rem;
    color: var(--text-light);
}

.todo-input-container {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    position: sticky;
    top: 80px;
    background-color: var(--background-color);
    padding: 1rem 0;
    z-index: 10;
}

.todo-input-container input {
    flex: 1;
    padding: 0.8rem 1rem;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-size: 1rem;
    outline: none;
    transition: var(--transition);
}

.todo-input-container input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(108, 99, 255, 0.2);
}

.todo-input-container button {
    padding: 0.8rem 1.5rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

.todo-input-container button:hover {
    background-color: var(--secondary-color);
}

.todo-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    max-height: 60vh;
    overflow-y: auto;
    padding-right: 0.5rem;
}

.todo-item {
    background-color: var(--card-color);
    padding: 1rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: var(--transition);
}

.todo-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
}

.todo-checkbox {
    min-width: 20px;
    height: 20px;
    accent-color: var(--primary-color);
    cursor: pointer;
}

.todo-text {
    flex: 1;
    font-size: 1.1rem;
}

.todo-text.completed {
    text-decoration: line-through;
    color: var(--text-light);
}

.delete-todo {
    background: none;
    border: none;
    color: var(--error-color);
    cursor: pointer;
    font-size: 1.2rem;
    transition: var(--transition);
    opacity: 0.7;
}

.delete-todo:hover {
    opacity: 1;
    transform: scale(1.1);
}

/* Timer Page Styles */
.timer-container {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.timer-display {
    margin: 2rem 0;
}

.timer-mode {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.time {
    font-size: 5rem;
    font-weight: 700;
    font-family: 'Courier New', monospace;
    color: var(--text-color);
    margin-bottom: 2rem;
}

.timer-controls {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.timer-controls button {
    padding: 0.8rem 1.8rem;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

#start-btn {
    background-color: var(--success-color);
    color: white;
}

#pause-btn {
    background-color: var(--warning-color);
    color: white;
}

#reset-btn {
    background-color: var(--error-color);
    color: white;
}

.timer-controls button:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

.session-counter {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.session-counter span {
    font-weight: 700;
    color: var(--primary-color);
}

.timer-settings {
    margin-top: 2rem;
    padding: 1rem;
    background-color: var(--card-color);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    display: inline-block;
}

.timer-settings label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.timer-settings input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary-color);
}

/* Journal Page Styles */
.journal-container {
    max-width: 800px;
    margin: 0 auto;
}

.journal-date-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin: 2rem 0;
    position: sticky;
    top: 80px;
    background-color: var(--background-color);
    padding: 1rem 0;
    z-index: 10;
}

.journal-date {
    font-size: 1.2rem;
    font-weight: 600;
}

.date-picker {
    padding: 0.5rem;
    border-radius: var(--border-radius);
    border: 1px solid #ddd;
    font-family: inherit;
    cursor: pointer;
}

.date-picker:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(108, 99, 255, 0.2);
}

.journal-date-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin: 2rem 0;
    flex-wrap: wrap;
}

.journal-date-container button {
    background-color: var(--card-color);
    border: 1px solid #ddd;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

.journal-date-container button:hover {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

#journal-entry {
    width: 100%;
    min-height: 300px;
    max-height: 60vh;
    padding: 1.5rem;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-size: 1rem;
    line-height: 1.6;
    resize: vertical;
    margin-bottom: 1rem;
    transition: var(--transition);
}

#journal-entry:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(108, 99, 255, 0.2);
}

.journal-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    position: sticky;
    bottom: 20px;
    background-color: var(--background-color);
    padding: 1rem 0;
}

#save-journal-btn {
    padding: 0.8rem 1.8rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

#save-journal-btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
}

.save-status {
    color: var(--text-light);
    font-size: 0.9rem;
    font-style: italic;
}

.journal-prompts {
    background-color: var(--card-color);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.journal-prompts h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.journal-prompts ul {
    list-style-position: inside;
    color: var(--text-light);
}

.journal-prompts li {
    margin-bottom: 0.5rem;
}

/* Goals Page Styles */
.goals-container {
    max-width: 800px;
    margin: 0 auto;
    padding-bottom: 2rem;
}

.goal-input-container {
    display: flex;
    gap: 1rem;
    margin: 2rem 0;
    position: sticky;
    top: 80px;
    background-color: var(--background-color);
    padding: 1rem 0;
    z-index: 10;
}

.goal-input-container input {
    flex: 1;
    padding: 0.8rem 1rem;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-size: 1rem;
    outline: none;
    transition: var(--transition);
}

.goal-input-container input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(108, 99, 255, 0.2);
}

.goal-input-container button {
    padding: 0.8rem 1.5rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

.goal-input-container button:hover {
    background-color: var(--secondary-color);
}

.goals-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 1rem;
    min-height: 60vh;
}

.goal-card {
    background-color: var(--card-color);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    position: relative;
    margin-bottom: 1rem;
}

.goal-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.goal-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary-color);
    margin: 0;
    flex: 1;
    min-width: 200px;
}

.goal-actions {
    display: flex;
    gap: 0.5rem;
    flex-shrink: 0;
}

.delete-goal-btn {
    padding: 0.3rem 0.6rem;
    background-color: var(--error-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
}

.goal-streak {
    font-size: 1rem;
    margin: 0.5rem 0;
    width: 100%;
}

.goal-streak span {
    font-weight: 600;
    color: var(--primary-color);
}

.goal-checkbox {
    margin-top: 1rem;
    display: flex;
    align-items: center;
    width: 100%;
}

.goal-checkbox label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    width: 100%;
}

.goal-checkbox input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: var(--primary-color);
}

.goal-calendar {
    margin-top: 1.5rem;
    overflow-x: auto;
    padding-bottom: 0.5rem;
}

.calendar-container {
    min-width: 400px;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(30px, 1fr));
    gap: 0.3rem;
    margin-top: 0.5rem;
}

.calendar-day {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
    background-color: #f0f0f0;
}

.calendar-day.completed {
    background-color: var(--success-color);
    color: white;
}

.calendar-day.missed {
    background-color: var(--error-color);
    color: white;
}

/* Breathing Page Styles */
.breathing-container {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.breathing-instructions {
    margin-bottom: 2rem;
    color: var(--text-light);
    font-size: 1.1rem;
}

.breathing-animation-container {
    margin: 2rem 0;
    min-height: 300px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2rem;
}

.breathing-circle {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background-color: var(--primary-color);
    opacity: 0.8;
    transition: all 1.5s ease-in-out;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 20px;
    margin-bottom: 20px;
}

.breathing-text {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-color);
}

.breathing-controls {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 2rem;
}

.breathing-controls button {
    padding: 0.8rem 1.8rem;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

#start-breathing-btn {
    background-color: var(--success-color);
    color: white;
}

#stop-breathing-btn {
    background-color: var(--error-color);
    color: white;
}

.breathing-controls button:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

.sound-options {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
    margin-top: 1.5rem;
    padding: 1.5rem;
    background-color: var(--card-color);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.sound-options label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

#sound-select {
    padding: 0.5rem;
    border-radius: var(--border-radius);
    border: 1px solid #ddd;
}

#play-sound-btn {
    padding: 0.5rem 1rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

#play-sound-btn:hover {
    background-color: var(--secondary-color);
}

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

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

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

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

/* Toggle switch styles */
.theme-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: auto;
    cursor: pointer;
    margin-left: 50px;
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 24px;
}

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

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
    border-radius: 24px;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

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

input:checked+.toggle-slider:before {
    transform: translateX(26px);
}

.toggle-icon {
    font-size: 1.2rem;
}

/* Dark mode styles */
[data-theme="dark"] {
    --primary-color: var(--dark-primary-color);
    --secondary-color: var(--dark-secondary-color);
    --accent-color: var(--dark-accent-color);
    --background-color: var(--dark-background-color);
    --card-color: var(--dark-card-color);
    --text-color: var(--dark-text-color);
    --text-light: var(--dark-text-light);
}

[data-theme="dark"] body {
    background-color: var(--dark-background-color);
    color: var(--dark-text-color);
}

[data-theme="dark"] .main-nav,
[data-theme="dark"] footer,
[data-theme="dark"] .feature-card,
[data-theme="dark"] .todo-item,
[data-theme="dark"] .current-goal,
[data-theme="dark"] .goal-history,
[data-theme="dark"] .journal-prompts,
[data-theme="dark"] .timer-settings,
[data-theme="dark"] .sound-options {
    background-color: var(--dark-card-color);
    color: var(--dark-text-color);
}

[data-theme="dark"] .progress-container {
    background-color: #333;
}

[data-theme="dark"] .calendar-day {
    background-color: #333;
}

[data-theme="dark"] .journal-date-container button,
[data-theme="dark"] .date-picker {
    background-color: var(--dark-card-color);
    color: var(--dark-text-color);
    border-color: #444;
}

[data-theme="dark"] .menu-toggle svg {
    stroke: var(--dark-text-color);
}

[data-theme="dark"] .nav-links {
    background-color: var(--dark-card-color);
    border-top: 1px solid #333;
}

/* Hamburger Menu */
.menu-toggle {
    background: none;
    color: var(--primary-color);
    border: none;
    cursor: pointer;
    padding: 0.6rem;
    z-index: 1001;
    display: none;
    transition: var(--transition);
}

.menu-toggle svg {
    width: 28px;
    height: 28px;
    stroke: var(--primary-color);
    transition: transform 0.3s ease;
}

.menu-toggle.active svg {
    transform: rotate(90deg);
}

.nav-links {
    transition: var(--transition);
}


/* Responsive Styles */

@media (max-width: 768px) {
    .main-nav {
        flex-direction: column;
        padding: 1rem;
    }

    .nav-links {
        margin-top: 1rem;
        gap: 0.5rem;
    }

    .hero {
        padding: 2rem 1rem;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .time {
        font-size: 3.5rem;
    }

    .timer-controls {
        flex-direction: column;
        align-items: center;
    }

    .todo-input-container,
    .goal-input-container,
    .journal-date-container {
        top: 70px;
    }

    .goal-header {
        flex-direction: column;
    }

    .goal-actions {
        width: 100%;
        justify-content: flex-end;
    }

    .menu-toggle {
        display: block;
        align-self: flex-end;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
        padding: 1rem 0;
        background-color: var(--card-color);
        border-top: 1px solid #ddd;
        box-shadow: var(--box-shadow);
        position: absolute;
        top: 100%;
        left: 0;
        z-index: 1000;
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links a {
        width: 100%;
        padding: 0.75rem 1.5rem;
        text-align: left;
        border-radius: 0;
    }
}

@media (max-width: 480px) {
    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .time {
        font-size: 2.5rem;
    }

    .date-picker {
        width: 100%;
        margin: 0.5rem 0;
    }

    .journal-date-container {
        flex-direction: column;
    }

    .goal-input-container,
    .todo-input-container {
        flex-direction: column;
    }

    .goal-input-container button,
    .todo-input-container button {
        width: 100%;
    }

    .calendar-grid {
        grid-template-columns: repeat(7, 1fr);
    }

    .breathing-circle {
        width: 150px;
        height: 150px;
    }
}