:root {
    --vanilla: #FFDDA5;
    --vanilla-soft: #fbf5e8;
    --vanilla-deep: #ecdcb8;

    --blue-cream: #aebfd6;
    --blue-cream-deep: #7e95bd;
    --blue-cream-darker: #5c7299;

    --bg-a: var(--vanilla);
    --bg-b: var(--blue-cream);

    --panel-bg: rgba(255, 252, 244, 0.92);
    --card-bg: var(--vanilla-soft);
    --card-border: var(--vanilla-deep);

    --text-main: #4a4030;
    --text-muted: #8a7d62;
    --text-on-accent: #fffaf0;

    --accent: var(--blue-cream-deep);
    --accent-dark: var(--blue-cream-darker);
    --accent-soft: #dde6f2;

    --shadow: rgba(124, 110, 70, 0.18);

    --input-bg: #fffdf7;
    --input-border: #ddd0ab;

    --low: #6f9b6a;
    --low-bg: #e7f0e2;
    --medium: #b8902c;
    --medium-bg: #f7ecd2;
    --high: #c2685a;
    --high-bg: #f6e0db;

    --cat-work: #5c7299;
    --cat-work-bg: #e1e7f2;
    --cat-personal: #7a8f5c;
    --cat-personal-bg: #e9efdf;
    --cat-urgent: #b06250;
    --cat-urgent-bg: #f3e0da;
}

body.dark {
    --bg-a: #232a36;
    --bg-b: #3b4a63;

    --panel-bg: rgba(30, 35, 46, 0.92);
    --card-bg: #2b3243;
    --card-border: #3e475c;

    --text-main: #f1ead9;
    --text-muted: #b9ad94;
    --text-on-accent: #fffaf0;

    --accent: #8fa6cc;
    --accent-dark: #aebfd6;
    --accent-soft: #36405a;

    --shadow: rgba(0, 0, 0, 0.4);

    --input-bg: #2b3243;
    --input-border: #4a5570;

    --low: #82c47c;
    --low-bg: #2a3a2a;
    --medium: #e0bb5e;
    --medium-bg: #443a22;
    --high: #e08b7a;
    --high-bg: #482d28;

    --cat-work: #9ab0d9;
    --cat-work-bg: #2e3a52;
    --cat-personal: #a3c08e;
    --cat-personal-bg: #2e3a2a;
    --cat-urgent: #d99a86;
    --cat-urgent-bg: #482f28;
}


* {
    box-sizing: border-box;
}

html, body {
    height: 100%;
}

body {
    font-family: 'Trebuchet MS', Arial, sans-serif;
    color: var(--text-main);
    margin: 0;
    min-height: 100vh;
    position: relative;
    transition: color 0.35s ease;
    overflow-x: hidden;
}

.page-backdrop {
    position: fixed;
    inset: 0;
    z-index: -1;
    background:
        radial-gradient(circle at 15% 20%, var(--bg-b) 0%, transparent 45%),
        radial-gradient(circle at 85% 80%, var(--bg-b) 0%, transparent 50%),
        linear-gradient(160deg, var(--bg-a) 0%, var(--vanilla-soft) 45%, var(--bg-a) 100%);
    transition: background 0.5s ease;
}

body.dark .page-backdrop {
    background:
        radial-gradient(circle at 15% 20%, var(--bg-b) 0%, transparent 45%),
        radial-gradient(circle at 85% 80%, var(--bg-b) 0%, transparent 50%),
        linear-gradient(160deg, var(--bg-a) 0%, #2a3140 45%, var(--bg-a) 100%);
}


.app-shell {
    max-width: 700px;
    margin: 0 auto;
    padding: 56px 20px 40px;
}

.app-header {
    text-align: center;
    margin-bottom: 24px;
}

.app-header h1 {
    margin: 0;
    font-size: 32px;
    letter-spacing: 0.5px;
    color: var(--accent-dark);
    text-shadow: 0 1px 0 rgba(255, 255, 255, 0.4);
}

body.dark .app-header h1 {
    text-shadow: none;
}

.app-subtitle {
    margin: 6px 0 0;
    color: var(--text-muted);
    font-size: 14px;
    font-style: italic;
}

.app-footer {
    text-align: center;
    margin-top: 28px;
    font-size: 12px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--text-muted);
    opacity: 0.7;
}


.theme-toggle {
    position: fixed;
    top: 18px;
    right: 18px;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    border: 1px solid var(--card-border);
    background: var(--card-bg);
    font-size: 19px;
    cursor: pointer;
    box-shadow: 0 4px 14px var(--shadow);
    transition: background 0.3s ease, transform 0.2s ease;
    z-index: 20;
}

.theme-toggle:hover {
    transform: scale(1.08) rotate(-8deg);
}


.panel {
    background: var(--bg-b);
    backdrop-filter: blur(6px);
    border-radius: 22px;
    padding: 22px;
    box-shadow: 0 14px 40px var(--shadow);
    border: 1px solid var(--card-border);
    transition: background 0.35s ease, border-color 0.35s ease;
}


.progress-card,
.add-task-card,
.filter-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 16px 18px;
    margin-bottom: 16px;
    transition: background 0.35s ease, border-color 0.35s ease;
}


.progress-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: var(#222);
    margin-bottom: 8px;
}

#progressText {
    font-weight: bold;
    color: var(#000);
}

.progress-bar-track {
    width: 100%;
    height: 14px;
    background: var(--accent-soft);
    border-radius: 999px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--accent), var(--accent-dark));
    border-radius: 999px;
    transition: width 0.4s ease;
}


input[type="text"] {
    width: 100%;
    padding: 12px 16px;
    font-size: 15px;
    border: 1px solid var(--input-border);
    border-radius: 999px;
    background: var(--input-bg);
    color: var(--text-main);
    transition: background 0.3s ease, color 0.3s ease, border-color 0.2s ease;
}

input[type="text"]:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

select {
    padding: 10px 12px;
    font-size: 13px;
    border: 1px solid var(--input-border);
    border-radius: 999px;
    background: var(--input-bg);
    color: var(--text-main);
    cursor: pointer;
    transition: background 0.3s ease, color 0.3s ease, border-color 0.2s ease;
}

.add-task-controls,
.filter-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

.add-task-controls select,
.filter-controls select {
    flex: 1 1 120px;
}

#addBtn {
    flex: 1 1 120px;
    padding: 10px 16px;
    font-size: 14px;
    font-weight: bold;
    color: var(--text-on-accent);
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    border: none;
    border-radius: 999px;
    cursor: pointer;
    transition: filter 0.2s ease, transform 0.15s ease;
}

#addBtn:hover {
    filter: brightness(1.08);
    transform: translateY(-1px);
}


#tasklist {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.empty-message {
    text-align: center;
    color: var(--text-muted);
    padding: 26px 0;
    font-style: italic;
    background: var(--card-bg);
    border: 1px dashed var(--card-border);
    border-radius: 14px;
}

.task-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 14px;
    padding: 12px 16px;
    transition: background 0.3s ease, border-color 0.3s ease, opacity 0.2s ease, transform 0.15s ease;
}

.task-item:hover {
    transform: translateX(2px);
}

.task-left {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    flex: 1;
    min-width: 0;
}

.task-checkbox {
    width: 19px;
    height: 19px;
    accent-color: var(--accent-dark);
    cursor: pointer;
    flex-shrink: 0;
}

.task-text {
    font-size: 15px;
    word-break: break-word;
}

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

.task-item.completed {
    opacity: 0.65;
}

.badge-wrap {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.badge {
    font-size: 11px;
    font-weight: bold;
    padding: 4px 10px;
    border-radius: 999px;
    white-space: nowrap;
}

.category-work {
    color: var(#fff);
    background-color: var(--cat-work-bg);
}
.category-personal {
    color: var(#fff);
    background: var(--cat-personal-bg);
}
.category-urgent {
    color: var(#fff);
    background: var(--cat-urgent-bg);
}

.priority-low {
    color: var(#fff);
    background: var(--low-bg);
}
.priority-medium {
    color: var(#000);
    background: var(--medium-bg);
}
.priority-high {
    color: var(#fff);
    background: var(--high-bg);
}

.delete-btn {
    padding: 8px 14px;
    font-size: 13px;
    font-weight: bold;
    color: var(--high);
    background: var(--high-bg);
    border: none;
    border-radius: 999px;
    cursor: pointer;
    flex-shrink: 0;
    transition: background 0.2s ease, color 0.2s ease, transform 0.15s ease;
}

.delete-btn:hover {
    background: var(--high);
    color: #fffaf0;
    transform: translateY(-1px);
}


@media (max-width: 600px) {
    .app-shell {
        padding: 64px 14px 28px;
    }

    .app-header h1 {
        font-size: 26px;
    }

    .panel {
        padding: 16px;
        border-radius: 18px;
    }

    .add-task-controls,
    .filter-controls {
        flex-direction: column;
    }

    .add-task-controls select,
    .filter-controls select,
    #addBtn {
        width: 100%;
    }

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

    .delete-btn {
        align-self: flex-end;
    }
}