@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@500;600;700;800&family=Inter:wght@400;500;600&display=swap');

:root {
    --bg-1: #f7f8fb;
    --bg-2: #edf1f5;
    --surface: #ffffff;
    --surface-2: #f8fafd;
    --text: #101828;
    --muted: #5f6b7b;
    --line: #d8e1eb;
    --line-strong: #c4d0dd;
    --primary: #111827;
    --primary-soft: #1f2937;
    --accent: #3b82f6;
    --danger: #b42318;
    --danger-soft: #fef3f2;
    --success: #15803d;
    --success-soft: #ecfdf3;

    --space-1: clamp(0.45rem, 0.35rem + 0.4vw, 0.75rem);
    --space-2: clamp(0.65rem, 0.52rem + 0.6vw, 1rem);
    --space-3: clamp(0.95rem, 0.75rem + 0.9vw, 1.4rem);
    --space-4: clamp(1.2rem, 1rem + 1.1vw, 2rem);
    --space-5: clamp(1.7rem, 1.3rem + 1.8vw, 2.8rem);

    --radius-s: 0.75rem;
    --radius-m: 1rem;
    --radius-l: 1.25rem;

    --shadow-soft: 0 1rem 2.2rem rgb(16 24 40 / 0.08);
}

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

html,
body {
    min-height: 100%;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--text);
    background:
        radial-gradient(120% 120% at 12% -15%, rgba(255, 255, 255, 0.8) 0%, rgba(255, 255, 255, 0) 58%),
        linear-gradient(180deg, var(--bg-1) 0%, var(--bg-2) 100%);
    line-height: 1.55;
}

.app-shell {
    min-height: 100vh;
    width: min(100%, 78rem);
    margin-inline: auto;
    padding: clamp(1rem, 0.85rem + 1.2vw, 2.5rem);
    display: grid;
    gap: var(--space-4);
}

.card-surface {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-l);
    box-shadow: var(--shadow-soft);
}

.app-header {
    padding: var(--space-4);
    display: grid;
    gap: var(--space-3);
    align-items: start;
    overflow: hidden;
}

.app-kicker {
    color: #32516e;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: clamp(0.68rem, 0.62rem + 0.2vw, 0.8rem);
    font-weight: 700;
}

.app-title {
    margin-top: 0.3rem;
    font-family: 'Manrope', sans-serif;
    font-size: clamp(1.5rem, 1.05rem + 1.9vw, 2.5rem);
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.app-subtitle {
    margin-top: 0.45rem;
    color: var(--muted);
    font-size: clamp(0.9rem, 0.84rem + 0.22vw, 1rem);
    max-width: 60ch;
}

.app-meta {
    justify-self: end;
    text-align: right;
    display: grid;
}

.hero-content {
    display: grid;
    gap: var(--space-1);
    min-width: 0;
}

.hero-points {
    margin-top: var(--space-2);
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
}

.hero-points span {
    border: 1px solid #d2dde8;
    background: #f6f9fc;
    color: #27435f;
    border-radius: 999rem;
    padding: 0.26rem 0.58rem;
    font-size: 0.72rem;
    font-weight: 600;
}

.task-counter {
    padding: 0.5rem 0.75rem;
    border-radius: 999rem;
    background: #f1f5f9;
    color: #27435f;
    font-size: clamp(0.78rem, 0.74rem + 0.2vw, 0.9rem);
    font-weight: 600;
    width: fit-content;
    justify-self: end;
}

.app-main {
    display: grid;
    gap: var(--space-3);
}

.control-panel,
.task-column {
    padding: var(--space-3);
    display: grid;
    gap: var(--space-3);
}

.control-panel section,
.task-column {
    background: var(--surface-2);
    border: 1px solid var(--line);
    border-radius: var(--radius-m);
}

.control-panel section {
    padding: var(--space-3);
}

.control-panel h2,
.task-column h2 {
    font-family: 'Manrope', sans-serif;
    font-size: clamp(1rem, 0.95rem + 0.3vw, 1.2rem);
    margin-bottom: var(--space-2);
    letter-spacing: -0.01em;
}

.input-group {
    display: grid;
    gap: var(--space-2);
}

#taskInput,
#taskCategory,
#addBtn,
.secondary-btn,
.filter-btn,
.task-inline-input,
.action-btn,
.task-check {
    font-family: inherit;
}

#taskInput,
#taskCategory,
.task-inline-input {
    width: 100%;
    min-width: 0;
    border: 1px solid var(--line-strong);
    border-radius: 0.8rem;
    padding: 0.76rem 0.88rem;
    background: #ffffff;
    color: var(--text);
    font-size: clamp(0.9rem, 0.86rem + 0.2vw, 1rem);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

#taskInput::placeholder {
    color: #8a95a5;
}

#taskInput:focus,
#taskCategory:focus,
.task-inline-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 0.22rem rgb(59 130 246 / 0.14);
}

#addBtn,
.secondary-btn {
    border: 1px solid transparent;
    border-radius: 0.8rem;
    padding: 0.76rem 0.95rem;
    font-size: clamp(0.86rem, 0.82rem + 0.2vw, 0.95rem);
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease, background 0.2s ease;
}

#addBtn {
    background: linear-gradient(180deg, var(--primary-soft) 0%, var(--primary) 100%);
    color: #eaf0ff;
}

#addBtn:hover,
.secondary-btn:hover {
    transform: translateY(-1px);
}

#addBtn:hover {
    box-shadow: 0 0.5rem 1.3rem rgb(15 23 42 / 0.2);
    filter: brightness(1.03);
}

.secondary-btn {
    background: #fff;
    border-color: var(--line-strong);
    color: #334155;
}

.secondary-btn:hover {
    background: #f8fafc;
}

.filter-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-1);
}

.filter-btn {
    border: 1px solid var(--line-strong);
    background: #fff;
    color: #334155;
    border-radius: 999rem;
    padding: 0.5rem 0.85rem;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.filter-btn:hover {
    transform: translateY(-1px);
}

.filter-btn.active {
    background: #e8eef6;
    border-color: #bcc8d6;
    color: #1d324a;
}

.list-header {
    padding: var(--space-3) var(--space-3) 0;
}

.task-list {
    list-style: none;
    display: grid;
    gap: var(--space-2);
    padding: var(--space-3);
}

.task-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    border: 1px solid var(--line);
    background: #ffffff;
    border-radius: 0.9rem;
    padding: 0.7rem 0.78rem;
    box-shadow: 0 0.3rem 1rem rgb(15 23 42 / 0.05);
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, opacity 0.18s ease;
    animation: task-enter 220ms cubic-bezier(0.22, 1, 0.36, 1);
}

.task-item:hover {
    transform: translateY(-2px);
    border-color: #c7d2df;
    box-shadow: 0 0.7rem 1.5rem rgb(15 23 42 / 0.08);
}

.task-item.removing {
    opacity: 0;
    transform: translateY(6px);
}

.task-check {
    width: 1.1rem;
    height: 1.1rem;
    accent-color: #334155;
    cursor: pointer;
    flex: 0 0 auto;
}

.task-main {
    min-width: 0;
    flex: 1;
    display: grid;
    gap: 0.22rem;
}

.task-text {
    font-size: clamp(0.9rem, 0.86rem + 0.2vw, 1rem);
    color: #1f2937;
    overflow-wrap: anywhere;
}

.task-text.completed {
    text-decoration: line-through;
    color: #8a95a5;
}

.task-tag {
    width: fit-content;
    max-width: 100%;
    border-radius: 999rem;
    padding: 0.2rem 0.56rem;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    background: #eef4fb;
    color: #27435f;
    border: 1px solid #d6e1ed;
}

.action-buttons {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    flex: 0 0 auto;
}

.action-btn {
    border: none;
    border-radius: 0.6rem;
    padding: 0.42rem 0.58rem;
    font-size: 0.78rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.18s ease, background 0.18s ease;
}

.edit-btn {
    color: #1d4f8c;
    background: #eaf2fd;
}

.edit-btn:hover {
    background: #ddeafc;
    transform: translateY(-1px);
}

.delete-btn {
    color: var(--danger);
    background: var(--danger-soft);
}

.delete-btn:hover {
    background: #fee4e2;
    transform: translateY(-1px);
}

.inline-edit-actions {
    display: inline-flex;
    gap: 0.35rem;
}

.inline-edit-actions button {
    border: none;
    border-radius: 0.5rem;
    padding: 0.35rem 0.48rem;
    font-size: 0.72rem;
    font-weight: 600;
    cursor: pointer;
}

.save-edit-btn {
    background: var(--success-soft);
    color: var(--success);
}

.cancel-edit-btn {
    background: #f3f4f6;
    color: #4b5563;
}

.empty-state {
    border: 1px dashed var(--line-strong);
    border-radius: 0.85rem;
    padding: 1.2rem;
    text-align: center;
    color: var(--muted);
    background: #ffffff;
    font-size: 0.92rem;
}

.app-footer {
    color: #526174;
    font-size: 0.86rem;
    text-align: center;
    padding-bottom: var(--space-2);
}

.app-footer a {
    color: #174a85;
    font-weight: 600;
}

.app-footer a:hover {
    text-decoration: underline;
}

@keyframes task-enter {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (min-width: 48rem) {
    .app-header {
        grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.9fr);
        align-items: end;
    }

    .app-main {
        grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.35fr);
        align-items: start;
    }

    .control-panel {
        position: sticky;
        top: var(--space-3);
    }

    .input-group {
        grid-template-columns: minmax(0, 1fr);
    }
}

@media (max-width: 47.99rem) {
    .app-shell {
        padding-inline: clamp(0.75rem, 0.6rem + 1vw, 1.25rem);
    }

    .app-header {
        gap: var(--space-4);
    }

    .app-meta {
        justify-self: end;
        text-align: right;
    }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}