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

:root {
    --cream:    #F5F0E8;
    --ivory:    #FDFAF4;
    --navy:     #1C2340;
    --navy-mid: #2E3A5C;
    --terracotta: #C0593A;
    --terra-light: #F5E8E3;
    --muted:    #7A7D8C;
    --border:   #DDD8CE;
    --done-bg:  #F0EEE8;
    --done-text:#A9A89D;
}

body {
    background: var(--cream);
    font-family: 'DM Sans', sans-serif;
    font-weight: 400;
    color: var(--navy);
    min-height: 100vh;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 3rem 1rem 6rem;
}

.container {
    width: 100%;
    max-width: 580px;
}

/* ── Header ── */
.header {
    margin-bottom: 2.5rem;
}

.header-top {
    display: flex;
    align-items: baseline;
    gap: 14px;
    margin-bottom: 4px;
}

.title {
    font-family: 'Playfair Display', serif;
    font-size: 2.6rem;
    font-weight: 600;
    color: var(--navy);
    letter-spacing: -0.02em;
    line-height: 1;
}

.task-count {
    font-family: 'DM Mono', monospace;
    font-size: 0.8rem;
    color: var(--muted);
    background: white;
    border: 1px solid var(--border);
    border-radius: 100px;
    padding: 3px 10px;
    transition: background 0.2s;
}

.subtitle {
    font-size: 0.875rem;
    color: var(--muted);
    font-weight: 300;
}

/* ── Input Area ── */
.input-row {
    display: flex;
    gap: 10px;
    margin-bottom: 2rem;
    background: white;
    border: 1.5px solid var(--border);
    border-radius: 14px;
    padding: 6px 6px 6px 18px;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.input-row:focus-within {
    border-color: var(--navy-mid);
    box-shadow: 0 0 0 3px rgba(28,35,64,0.07);
}

#task-input {
    flex: 1;
    border: none;
    outline: none;
    font-family: 'DM Sans', sans-serif;
    font-size: 0.95rem;
    font-weight: 400;
    color: var(--navy);
    background: transparent;
}

#task-input::placeholder {
    color: #BBBAB3;
}

.add-btn {
    background: var(--navy);
    color: white;
    border: none;
    border-radius: 10px;
    padding: 10px 22px;
    font-family: 'DM Sans', sans-serif;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    white-space: nowrap;
}

.add-btn:hover  { background: var(--navy-mid); }
.add-btn:active { transform: scale(0.97); }

/* ── Filters ── */
.filters {
    display: flex;
    gap: 6px;
    margin-bottom: 1.25rem;
}

.filter-btn {
    font-family: 'DM Sans', sans-serif;
    font-size: 0.8rem;
    font-weight: 500;
    padding: 5px 14px;
    border-radius: 100px;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--muted);
    cursor: pointer;
    transition: all 0.15s;
}

.filter-btn:hover { border-color: var(--navy-mid); color: var(--navy); }
.filter-btn.active {
    background: var(--navy);
    color: white;
    border-color: var(--navy);
}

/* ── Task List ── */
#task-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* ── Empty State ── */
.empty-state {
    display: none;
    flex-direction: column;
    align-items: center;
    padding: 3.5rem 2rem;
    text-align: center;
}

.empty-state.visible { display: flex; }

.empty-icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    background: white;
    border: 1.5px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.empty-icon svg { width: 24px; height: 24px; opacity: 0.35; }

.empty-state h3 {
    font-family: 'Playfair Display', serif;
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--navy);
    margin-bottom: 6px;
}

.empty-state p {
    font-size: 0.875rem;
    color: var(--muted);
    font-weight: 300;
}

/* ── Task Item ── */
.task-item {
    display: flex;
    align-items: center;
    gap: 14px;
    background: white;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 14px 16px;
    cursor: pointer;
    transition: border-color 0.2s, box-shadow 0.2s, background 0.25s;
    animation: slideIn 0.2s ease-out;
}

@keyframes slideIn {
    from { opacity: 0; transform: translateY(-6px); }
    to   { opacity: 1; transform: translateY(0); }
}

.task-item:hover {
    border-color: #C5C0B5;
    box-shadow: 0 3px 12px rgba(28,35,64,0.07);
}

.task-item.completed {
    background: var(--done-bg);
    border-color: transparent;
}

.task-item.completed:hover {
    border-color: var(--border);
    box-shadow: none;
}

/* Checkbox */
.check-wrap {
    flex-shrink: 0;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: 1.5px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, border-color 0.2s;
}

.task-item:hover .check-wrap { border-color: var(--terracotta); }

.task-item.completed .check-wrap {
    background: var(--terracotta);
    border-color: var(--terracotta);
}

.check-icon {
    width: 10px;
    height: 10px;
    stroke: white;
    fill: none;
    stroke-width: 2.5;
    stroke-linecap: round;
    stroke-linejoin: round;
    opacity: 0;
    transform: scale(0.5);
    transition: opacity 0.2s, transform 0.2s;
}

.task-item.completed .check-icon {
    opacity: 1;
    transform: scale(1);
}

/* Text block */
.task-body {
    flex: 1;
    min-width: 0;
}

.task-text {
    font-size: 0.95rem;
    font-weight: 400;
    color: var(--navy);
    line-height: 1.4;
    transition: color 0.25s;
    word-break: break-word;
}

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

.task-date {
    font-family: 'DM Mono', monospace;
    font-size: 0.72rem;
    color: var(--muted);
    margin-top: 3px;
    opacity: 0;
    transition: opacity 0.15s;
}

.task-item:hover .task-date { opacity: 1; }
.task-item.completed .task-date { opacity: 1; }

/* Delete btn */
.delete-btn {
    flex-shrink: 0;
    width: 30px;
    height: 30px;
    border-radius: 8px;
    border: none;
    background: transparent;
    color: #C2BDB5;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s, color 0.15s;
    opacity: 0;
}

.task-item:hover .delete-btn { opacity: 1; }

.delete-btn:hover {
    background: #FDE8E3;
    color: var(--terracotta);
}

.delete-btn svg {
    width: 14px;
    height: 14px;
    stroke: currentColor;
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
}

/* ── Footer ── */
.footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 1.5rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--border);
}

.footer-info {
    font-size: 0.8rem;
    color: var(--muted);
    font-weight: 300;
}

.clear-btn {
    font-family: 'DM Sans', sans-serif;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--muted);
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 6px;
    transition: color 0.15s, background 0.15s;
}

.clear-btn:hover { color: var(--terracotta); background: var(--terra-light); }
.clear-btn:disabled { opacity: 0.35; pointer-events: none; }