/* ===== Layout ===== */
body {
    background: var(--bg-main);
    color: var(--text-primary);
}

nav {
    background: var(--gradient-header);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-subtle);
}

nav h4 {
    font-weight: 600;
    letter-spacing: 0.3px;
}

nav button {
    background: transparent;
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    padding: 0.4rem 0.9rem;
    cursor: pointer;
}

nav button a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.9rem;
}

nav button:hover {
    border-color: var(--accent-primary);
}

/* ===== Container ===== */
#container {
    max-width: 900px;
    margin: 2rem auto;
    padding: 1rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1rem;
}

/* ===== Panels ===== */
.panel {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: 14px;
    padding: 0.9rem 1rem 1.1rem;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    position: relative;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.panel::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: var(--gradient-card-glow);
    opacity: 0;
    pointer-events: none;
}

.panel:hover {
    transform: translateY(-2px);
}

.panel:hover::before {
    opacity: 1;
}

/* ===== Time Label ===== */
.top {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 0.4px;
}

/* ===== Input ===== */
.panel input {
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--border-subtle);
    padding: 0.4rem 0;
    font-size: 0.95rem;
    color: var(--text-primary);
    outline: none;
}

.panel input::placeholder {
    color: var(--text-muted);
}

.panel input:focus {
    border-bottom-color: var(--accent-primary);
}

/* ===== Focus State ===== */
.panel:has(input:focus) {
    border-color: var(--accent-primary);
}

/* ===== Responsive ===== */
@media (max-width: 600px) {
    #container {
        margin: 1rem;
        padding: 0;
    }

    nav {
        flex-direction: column;
        gap: 0.5rem;
    }
}