@layer reset {

    *,
    *::before,
    *::after {
        box-sizing: border-box;
    }

    body,
    h1,
    h2,
    h3,
    h4,
    p,
    figure,
    blockquote,
    dl,
    dd {
        margin: 0;
    }

    ul[role='list'],
    ol[role='list'] {
        list-style: none;
    }

    html:focus-within {
        scroll-behavior: smooth;
    }

    body {
        min-height: 100vh;
        text-rendering: optimizeSpeed;
        line-height: 1.5;
        display: flex;
        flex-direction: column;
    }

    a:not([class]) {
        text-decoration-skip-ink: auto;
    }

    img,
    picture {
        max-width: 100%;
        display: block;
    }

    input,
    button,
    textarea,
    select {
        font: inherit;
    }

    @media (prefers-reduced-motion: reduce) {
        html:focus-within {
            scroll-behavior: auto;
        }

        *,
        *::before,
        *::after {
            animation-duration: 0.01ms !important;
            animation-iteration-count: 1 !important;
            transition-duration: 0.01ms !important;
            scroll-behavior: auto !important;
        }
    }
}

@layer base {
    :root {
        --fg-color-black: #1f2328;
        --fg-color-accent: #0969da;
        --fg-color-danger: #D91A09;
        --fg-color-muted: #59636e;
        --fg-color-inverse: #ffffff;

        --bg-color-default: #ffffff;
        --bg-color-accent: #0969da;
        --bg-color-accent-light: #cee1f7;
        --bg-color-danger: #D91A09;
        --bg-color-muted: #f0f7fd;

        --border-color: #d1dae6;

        --font-size-body: 1rem;
        --font-size-title1: 2rem;
        --font-size-title2: 1.75rem;
        --font-size-headline: 1.25rem;
        --font-size-subheadline: 1.1rem;
        --font-size-caption: 0.8rem;

        --border-width: 1pt;

        --border-radius-btn: 0.58rem;
        --border-radius: 0.75rem;
        --border-radius-container: 1rem;
    }

    body {
        font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji';
        font-size: var(--font-size-body);
        color: var(--fg-color-black);
        background-color: var(--bg-color-muted);
        width: 100%;
    }

    a {
        color: var(--fg-color-black);
    }

    a:hover,
    a:focus-visible {
        color: var(--fg-color-accent);
        outline-offset: 1pt;
    }

    input,
    textarea,
    div[contenteditable="true"] {
        outline: none;
    }

    .header-title {
        font-size: var(--font-size-headline);
    }

    button,
    .button {
        background-color: var(--bg-color-default);
        border-radius: 9999px;
        border: 1pt solid var(--border-color);
        text-decoration: none;
        cursor: pointer;
        display: inline-flex;
        align-items: center;
        padding: 4px 8px;

        span {
            padding: 4px 8px;
        }

        &:hover {
            background-color: var(--bg-color-accent);
            color: var(--fg-color-inverse);
        }
    }

    .button-accent {
        background-color: var(--bg-color-accent-light);
        color: var(--fg-color-black);
        border-color: var(--bg-color-accent-light);

        &:hover {
            background-color: var(--bg-color-accent);
            color: var(--fg-color-inverse);
        }
    }

    .button+.selected {
        background-color: var(--bg-color-accent);
        border-width: 0;
        color: var(--fg-color-inverse);
    }

    .segment-item {
        padding: 6pt 8pt;
    }

    .segment-item.active {
        background-color: var(--bg-color-accent);
        border-radius: var(--border-radius-btn);
        color: var(--fg-color-inverse);
    }
}

@layer layout {
    :root {
        --max-width: 1200px;
    }

    header,
    main,
    footer {
        margin-inline: auto;
        max-width: var(--max-width);
        width: 100%;
        padding-inline: 11px;
        box-sizing: border-box;
    }

    main {
        flex: 1;
    }

    footer {
        text-align: center;
        padding-block: 1rem;
    }

    @media (max-width: 768px) {
        main {
            padding-inline: 0;
            width: 100%;
            max-width: none;
            margin-inline: 0;
        }
    }

    header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-flow: nowrap;
        min-height: 64px;
    }

    .header-left {
        display: flex;
        align-items: center;
    }

    .back-button {
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 8px;
        border-radius: 6px;
        color: var(--text-secondary);
        text-decoration: none;
        transition: all 0.2s ease;
        margin-right: 8px;
    }

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

    .back-button:active {
        transform: translateX(-1px);
    }

    .actions-nav {
        display: flex;
        justify-content: flex-end;
        align-items: center;
        gap: 8px;

        a {
            display: flex;
            align-items: center;
            padding: 6px 8px;
            color: var(--fg-color-black);
            text-decoration: none;
            transition: color 0.2s ease;

            &:hover {
                color: var(--fg-color-accent);
            }

            span {
                padding: 0;
            }
        }
    }

    @media (max-width: 768px) {
        .actions-nav {
            justify-content: center;
            gap: 12px;

            a {
                padding: 8px 12px;
            }
        }
    }

    .user-menu {
        position: relative;
    }

    .user-menu-button {
        display: flex;
        align-items: center;
        gap: 4px;
        padding: 6px 2px;
        background: none;
        border: none;
        color: var(--fg-color-black);
        cursor: pointer;
        text-decoration: none;
    }

    .user-menu-button:hover {
        color: var(--fg-color-accent);
    }

    .user-menu-dropdown {
        position: absolute;
        top: 100%;
        right: 0;
        margin-top: 4px;
        background-color: var(--bg-color-default);
        border: 1pt solid var(--border-color);
        border-radius: var(--border-radius);
        box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
        min-width: 180px;
        z-index: 50;
    }

    .user-menu-dropdown.hidden {
        display: none;
    }

    .user-menu-item {
        display: block;
        width: 100%;
        padding: 8px 12px;
        text-align: left;
        text-decoration: none;
        color: var(--fg-color-black);
        border-radius: var(--border-radius);
        background: none;
        border: none;
        cursor: pointer;
    }

    .user-menu-item:hover {
        background-color: var(--bg-color-muted);
    }

    .user-menu-item:first-child {
        border-radius: var(--border-radius) var(--border-radius) 0 0;
    }

    .user-menu-item:last-child {
        border-radius: 0 0 var(--border-radius) var(--border-radius);
    }
}

@layer components {
    .content-header {
        padding-inline: 1rem;
        padding-top: 0.5rem;
        padding-bottom: 1rem;
        display: flex;
        align-items: center;
        gap: 17px;
    }

    @media (max-width: 768px) {
        .content-header {
            padding-inline: 11px;
        }
    }

    .period-container {
        background-color: var(--bg-color-default);
        border-radius: 32px;
        width: 100%;
        padding: 1rem;
        box-shadow: 0 0 3pt 2pt var(--bg-color-accent-light);
        border: 1pt solid var(--bg-color-accent-light);
    }

    @media (max-width: 768px) {
        .period-container {
            border-radius: 0;
            padding: 11px;
        }
    }

    .period-nav {
        border: 1pt solid var(--bg-color-accent-light);
        background-color: var(--bg-color-muted);
        border-radius: 21px;
        display: inline-flex;
        overflow: scroll;
        gap: 5pt;
        list-style: none;
        padding: 8pt 4pt;
        overflow-x: scroll;
        max-width: 100%;
        white-space: nowrap;

        a {
            text-transform: lowercase;
            text-decoration: none;
            border-radius: 15px;
        }
    }

    .period-nav-wrapper {
        position: relative;
        display: block;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;

        &.has-overflow::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            bottom: 0;
            width: 20px;
            background: linear-gradient(to right, transparent, #ffffff);
            border-radius: 0 21px 21px 0;
            pointer-events: none;
            z-index: 1;
        }
    }

    .period-content {
        padding-block: 1rem;
    }

    .tasks-list {
        display: flex;
        flex-direction: column;
        gap: 12px;
    }

    .task-container {
        display: flex;
        border-radius: 33px;

        button {
            border: none;
            background-color: transparent;
            touch-action: manipulation;
        }

        .task {
            flex-grow: 1;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 14px 11px;
            border-radius: 30px;
            background-color: var(--bg-color-accent-light);
            font-size: var(--font-size-subheadline);

            span {
                display: inline-block;
                background-color: var(--fg-color-inverse);
                padding-inline: 7px;
                border-radius: 21px;
                height: 21px;
                font-size: var(--font-size-caption);
            }

            .input {
                flex-grow: 1;
            }
        }

        .task:has(.input:focus) {
            border-color: var(--fg-color-muted);
        }

        &:has(.editable-task) {
            border: var(--border-width) solid var(--border-color);

            .task {
                background-color: transparent;
            }
        }

        &:has(.noneditable-task) {
            border: var(--border-width) solid var(--bg-color-accent-light);
        }

        &:has(.completed-task) {
            border-color: var(--bg-color-muted);

            .task {
                background-color: var(--bg-color-muted);
                border-color: var(--bg-color-muted);

                .input {
                    text-decoration: line-through;
                    color: var(--fg-color-muted);
                }
            }
        }

        &:has(button:hover) {
            background-color: var(--bg-color-accent);
            border-color: var(--bg-color-accent);

            button {
                color: var(--fg-color-inverse);
            }

            .task {
                border-color: var(--bg-color-accent);
                background-color: var(--bg-color-accent-light);

                span {
                    display: inline-block;
                    background-color: var(--bg-color-default);
                    color: var(--fg-color-muted);
                }
            }

            &:has(.completed-task) {
                background-color: var(--bg-color-danger);
                border-color: var(--bg-color-danger);

                .task {
                    border-color: var(--bg-color-muted);
                    background-color: var(--bg-color-muted);

                    span {
                        display: inline-block;
                        background-color: var(--bg-color-default);
                        color: var(--fg-color-muted);
                    }
                }
            }
        }
    } 

    .tasks-list-actions {
        display: flex;
        justify-content: flex-end;
        align-items: center;
        gap: 17px;
        padding-inline: 4px;
        padding-top: 17px;

         a {
             text-decoration: none;
             display: inline-flex;
             align-items: center;
             gap: 4px;
         }

         .button {
            padding: 7px 4px;
            gap: 6px;
         }

         a:hover,
         a:focus-visible {
             color: var(--fg-color-danger);
         }
    }

    /* Account page components */
    .settings-row {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .settings-label {
        background: none;
        padding: 0;
        height: auto;
        font-size: var(--font-size-body);
        color: var(--fg-color-black);
        font-weight: 500;
    }

    .settings-select {
        background-color: var(--bg-color-default);
        border: 1pt solid var(--border-color);
        border-radius: var(--border-radius-btn);
        padding: 4px 8px;
        font-size: var(--font-size-body);
    }

    .settings-select:focus {
        outline: none;
        border-color: var(--bg-color-accent);
        box-shadow: 0 0 0 2px var(--bg-color-accent-light);
    }

    .section-subheader {
        padding-bottom: 0.5rem;
        margin-top: 2rem;
        display: flex;
        align-items: center;
        justify-content: space-between;
    }

    .empty-state {
        text-align: center;
        color: var(--fg-color-muted);
        padding: 2rem;
    }

    .empty-state p {
        margin: 0;
    }

    /* Enhanced account page styles */
    .header-with-icon {
        display: flex;
        align-items: center;
        gap: 12px;
    }

    .header-icon {
        opacity: 0.7;
        transition: opacity 0.2s ease;
    }

    .settings-section {
        margin-bottom: 2rem;
    }

    .settings-section:last-child {
        margin-bottom: 0;
    }

    .section-header {
        display: flex;
        align-items: center;
        gap: 8px;
        margin-bottom: 1rem;
        padding-bottom: 0.5rem;
        border-bottom: 1pt solid var(--border-color);
    }

    .section-icon {
        opacity: 0.8;
        filter: grayscale(20%);
        transition: all 0.2s ease;
    }

    .section-title {
        font-size: var(--font-size-subheadline);
        font-weight: 600;
        color: var(--fg-color-black);
    }

    .section-header:hover .section-icon {
        opacity: 1;
        filter: grayscale(0%);
        transform: scale(1.05);
    }

    .button-danger {
        background-color: var(--bg-color-default);
        color: var(--fg-color-danger);
        border-color: var(--border-color);
        transition: all 0.2s ease;
    }

    .button-danger:hover {
        background-color: var(--bg-color-danger);
        color: var(--fg-color-inverse);
        border-color: var(--bg-color-danger);
        transform: translateY(-1px);
        box-shadow: 0 2px 4px rgba(217, 26, 9, 0.2);
    }

    .button-accent {
        transition: all 0.2s ease;
    }

    .button-accent:hover {
        transform: translateY(-1px);
        box-shadow: 0 2px 4px rgba(9, 105, 218, 0.2);
    }

    .unlink-btn {
        display: flex;
        align-items: center;
        gap: 4px;
        padding: 6px 12px;
        font-size: var(--font-size-caption);
        transition: all 0.2s ease;
    }

    .unlink-btn:hover {
        color: var(--fg-color-danger);
        transform: scale(1.05);
    }

    .account-email {
        font-weight: 500;
    }

    .empty-state-icon {
        opacity: 0.3;
        margin: 0 auto 1rem auto;
        filter: grayscale(50%);
        transition: all 0.3s ease;
    }

    .empty-state:hover .empty-state-icon {
        opacity: 0.5;
        filter: grayscale(20%);
        transform: scale(1.1);
    }

    .settings-select {
        transition: all 0.2s ease;
    }

    .settings-select:hover {
        border-color: var(--bg-color-accent);
    }

    /* Success animation for form feedback */
    @keyframes successPulse {
        0% {
            background-color: var(--bg-color-default);
            transform: scale(1);
        }
        50% {
            background-color: var(--bg-color-accent);
            color: var(--fg-color-inverse);
            transform: scale(1.02);
        }
        100% {
            background-color: var(--bg-color-default);
            transform: scale(1);
        }
    }

    .success-feedback {
        animation: successPulse 1s ease-in-out;
    }

    /* Loading state for buttons */
    .button-loading {
        position: relative;
        color: transparent;
        pointer-events: none;
    }

    .button-loading::after {
        content: '';
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: 16px;
        height: 16px;
        border: 2px solid var(--bg-color-accent-light);
        border-top: 2px solid var(--bg-color-accent);
        border-radius: 50%;
        animation: spin 0.8s linear infinite;
    }

    @keyframes spin {
        0% { transform: translate(-50%, -50%) rotate(0deg); }
        100% { transform: translate(-50%, -50%) rotate(360deg); }
    }

    /* Smooth section reveals */
    .settings-section {
        opacity: 0;
        transform: translateY(20px);
        animation: slideInUp 0.4s ease-out forwards;
    }

    .settings-section:nth-child(1) { animation-delay: 0.1s; }
    .settings-section:nth-child(2) { animation-delay: 0.2s; }
    .settings-section:nth-child(3) { animation-delay: 0.3s; }

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

    /* Enhanced focus states */
    .settings-select:focus {
        outline: none;
        border-color: var(--bg-color-accent);
        box-shadow: 0 0 0 3px var(--bg-color-accent-light);
        transform: scale(1.01);
    }

    .button:focus-visible {
        outline: 2px solid var(--bg-color-accent);
        outline-offset: 2px;
    }

    /* Responsive enhancements for account page */
    @media (max-width: 768px) {
        .header-with-icon {
            gap: 8px;
        }

        .header-icon {
            width: 20px;
            height: 20px;
        }

        .section-header {
            gap: 6px;
            margin-bottom: 0.75rem;
        }

        .section-icon {
            width: 16px;
            height: 16px;
        }

        .section-title {
            font-size: var(--font-size-body);
        }

        .settings-section {
            margin-bottom: 1.5rem;
        }

        .empty-state-icon {
            width: 40px;
            height: 40px;
        }

        .button-accent,
        .button-danger {
            font-size: var(--font-size-caption);
            padding: 6px 12px;
        }

        .unlink-btn {
            padding: 4px 8px;
        }

        /* Reduce animations on mobile for performance */
        .settings-section {
            animation: none;
            opacity: 1;
            transform: none;
        }

        .section-header:hover .section-icon,
        .empty-state:hover .empty-state-icon {
            transform: none;
        }
    }

    #lock-btn {
        padding-inline: 1rem;
    }    

    .archive-nav {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding-bottom: 21px;
        flex-wrap: wrap;
    }

    .pagination-controls {
        display: flex;
        justify-content: center;
        align-items: center;
        gap: 11px;
        padding-inline: 4px;
        padding-top: 17px;
    }

    .archive-group {
        .header-title {
            padding-inline: 17px;
        }
    }
}

@layer utilities {
    /* Utility classes */
    .flex {
        display: flex;
    }

    .justify-between {
        justify-content: space-between;
    }

    .justify-center {
        justify-content: center;
    }

    .items-center {
        align-items: center;
    }

    .gap-4 {
        gap: 1rem;
    }

    .mb-4 {
        margin-bottom: 1rem;
    }

    .mt-4 {
        margin-top: 1rem;
    }

    .mt-8 {
        margin-top: 2rem;
    }

    .py-8 {
        padding-top: 2rem;
        padding-bottom: 2rem;
    }

    .text-center {
        text-align: center;
    }

    .text-muted {
        color: var(--fg-color-muted);
    }
}