:root {
    --bg: #f5efe4;
    --surface: #fffaf2;
    --surface-strong: #ffffff;
    --ink: #1e2430;
    --muted: #5d6472;
    --accent: #1f6f78;
    --accent-strong: #174f57;
    --danger: #9c2f2f;
    --danger-soft: #fce7e7;
    --success: #1f7a4a;
    --success-soft: #e4f6ea;
    --border: #d9cfbf;
    --shadow: 0 16px 40px rgba(52, 44, 24, 0.08);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    color: var(--ink);
    background:
        radial-gradient(circle at top left, rgba(31, 111, 120, 0.16), transparent 28%),
        linear-gradient(180deg, #f9f4eb 0%, var(--bg) 100%);
}

a {
    color: var(--accent-strong);
}

.shell {
    width: min(1120px, calc(100% - 1.5rem));
    margin: 0 auto;
    padding: 1rem 0 2rem;
}

.topbar {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 0 1.25rem;
}

.topbar h1,
.hero h2,
.panel h2,
.panel h3,
.auth-card h2 {
    margin: 0;
}

.eyebrow {
    margin: 0 0 0.35rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.72rem;
    color: var(--muted);
}

.nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 0.65rem;
}

.nav a {
    text-decoration: none;
    padding: 0.7rem 0.9rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.65);
    border: 1px solid transparent;
}

.nav a.active {
    background: var(--accent);
    color: white;
}

.content {
    display: grid;
    gap: 1rem;
}

.hero,
.panel,
.stat-card,
.auth-card,
.flash {
    background: rgba(255, 255, 255, 0.78);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-radius: 24px;
    box-shadow: var(--shadow);
}

.hero,
.panel,
.auth-card {
    padding: 1.25rem;
}

.hero {
    background:
        linear-gradient(135deg, rgba(31, 111, 120, 0.14), rgba(255, 255, 255, 0.9)),
        rgba(255, 255, 255, 0.78);
}

.grid {
    display: grid;
    gap: 1rem;
}

.grid.three {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid.two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.stat-card {
    padding: 1.1rem 1.2rem;
}

.stat-card span,
.panel p,
.list-row p,
.activity-row p,
small {
    color: var(--muted);
}

.stat-card strong {
    display: block;
    margin-top: 0.4rem;
    font-size: 1.8rem;
}

.panel-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.stack {
    display: grid;
    gap: 0.9rem;
}

.stack.compact {
    gap: 0.7rem;
}

label {
    display: grid;
    gap: 0.45rem;
    font-weight: 600;
}

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

input,
select,
textarea {
    width: 100%;
    border-radius: 14px;
    border: 1px solid var(--border);
    padding: 0.8rem 0.9rem;
    background: var(--surface-strong);
    color: var(--ink);
}

button {
    border: 0;
    border-radius: 14px;
    padding: 0.9rem 1rem;
    background: var(--accent);
    color: white;
    font-weight: 700;
    cursor: pointer;
}

button:hover {
    background: var(--accent-strong);
}

.button-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: fit-content;
    border-radius: 14px;
    padding: 0.8rem 1rem;
    background: rgba(31, 111, 120, 0.12);
    color: var(--accent-strong);
    text-decoration: none;
    font-weight: 700;
}

.list-row,
.activity-row,
.amount-row {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: center;
}

.activity-row,
.list-card {
    padding: 0.85rem 0.95rem;
    border-radius: 18px;
    background: var(--surface);
    border: 1px solid var(--border);
}

.list-card {
    display: grid;
    gap: 0.65rem;
}

.amount-row {
    flex-wrap: wrap;
    align-items: flex-start;
}

.right {
    text-align: right;
}

.auth-card {
    width: min(460px, 100%);
    margin: 4rem auto 0;
}

.flash {
    padding: 0.95rem 1rem;
    margin-bottom: 1rem;
}

.flash.success {
    color: var(--success);
    background: var(--success-soft);
}

.flash.error,
.error-panel {
    color: var(--danger);
    background: var(--danger-soft);
}

@media (max-width: 760px) {
    .shell {
        width: min(100% - 1rem, 1120px);
    }

    .topbar,
    .grid.three,
    .grid.two,
    .list-row,
    .activity-row {
        grid-template-columns: 1fr;
        display: grid;
    }

    .nav {
        justify-content: flex-start;
    }

    .right {
        text-align: left;
    }

    .auth-card {
        margin-top: 2rem;
    }
}