:root {
    --bg: #edf2e6;
    --surface: #fdfcf8;
    --surface-strong: #ffffff;
    --line: #d4dccd;
    --text: #193128;
    --muted: #5c7267;
    --accent: #1a7f5a;
    --accent-strong: #0f5a3f;
    --accent-soft: #d9efe5;
    --danger: #b94e48;
    --warning: #b17a21;
    --shadow: 0 18px 50px rgba(25, 49, 40, 0.08);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI Variable", "Trebuchet MS", sans-serif;
    background:
        radial-gradient(circle at top right, rgba(26, 127, 90, 0.12), transparent 28%),
        linear-gradient(180deg, #f6f8f1 0%, var(--bg) 100%);
    color: var(--text);
}

a {
    color: inherit;
    text-decoration: none;
}

.topbar {
    display: flex;
    justify-content: space-between;
    gap: 1.5rem;
    align-items: flex-start;
    padding: 2rem clamp(1rem, 3vw, 2.5rem) 1rem;
}

.topbar.compact {
    padding-bottom: 0.5rem;
}

.topnav {
    display: flex;
    gap: 0.75rem;
    align-items: center;
    flex-wrap: wrap;
}

.topnav form {
    margin: 0;
}

.topnav a {
    padding: 0.7rem 1rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.6);
    border: 1px solid rgba(25, 49, 40, 0.08);
}

.page-grid,
.panel-stack {
    padding: 1rem clamp(1rem, 3vw, 2.5rem) 2.5rem;
}

.page-grid {
    display: grid;
    gap: 1.25rem;
}

.panel-stack {
    display: grid;
    gap: 1rem;
}

.day-layout {
    grid-template-columns: minmax(0, 2fr) minmax(280px, 0.9fr);
    align-items: start;
}

.sidebar-stack {
    display: grid;
    gap: 1rem;
}

.hero-card,
.panel,
.metric-card,
.login-panel {
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.7);
    border-radius: 24px;
    box-shadow: var(--shadow);
}

.hero-card,
.panel,
.metric-card {
    padding: 1.5rem;
}

.hero-card {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.94), rgba(217, 239, 229, 0.9));
}

.panel-header,
.exercise-top,
.week-card-top,
.day-card-top,
.summary-head {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: flex-start;
}

.section-label,
.eyebrow {
    margin: 0 0 0.4rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    font-size: 0.74rem;
    color: var(--muted);
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1,
h2,
h3 {
    font-family: Georgia, "Times New Roman", serif;
}

.lead {
    color: var(--muted);
    max-width: 70ch;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 999px;
    padding: 0.8rem 1.1rem;
    font: inherit;
    cursor: pointer;
}

.button.primary {
    background: var(--accent);
    color: white;
}

.button.secondary {
    background: var(--accent-soft);
    color: var(--accent-strong);
}

.button.ghost {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--line);
}

.button.large {
    width: 100%;
    padding: 1rem 1.2rem;
}

.week-grid,
.day-grid,
.summary-grid {
    display: grid;
    gap: 1rem;
}

.week-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.day-grid {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.summary-grid {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.week-card,
.day-card,
.exercise-card,
.summary-item {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 20px;
    padding: 1rem;
}

.week-card.current {
    outline: 2px solid rgba(26, 127, 90, 0.28);
}

.week-badge,
.progress-chip,
.status-pill,
.tag {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    font-size: 0.8rem;
    padding: 0.4rem 0.7rem;
}

.week-badge,
.tag {
    background: var(--accent-soft);
    color: var(--accent-strong);
}

.progress-chip,
.status-pill {
    background: rgba(25, 49, 40, 0.08);
    color: var(--muted);
}

.progress-bar {
    width: 100%;
    height: 10px;
    border-radius: 999px;
    background: rgba(25, 49, 40, 0.08);
    overflow: hidden;
    margin: 1rem 0;
}

.progress-bar span {
    display: block;
    height: 100%;
    background: linear-gradient(90deg, var(--accent), #63b48f);
}

.card-actions,
.tag-row {
    display: flex;
    gap: 0.6rem;
    flex-wrap: wrap;
}

.exercise-stack,
.summary-list {
    display: grid;
    gap: 1rem;
}

.markdown {
    color: var(--text);
    line-height: 1.6;
}

.markdown ul,
.markdown ol {
    padding-left: 1.25rem;
}

.markdown.intro {
    margin-bottom: 1rem;
}

.note-form {
    display: grid;
    gap: 0.75rem;
}

label {
    font-weight: 600;
}

select,
textarea {
    width: 100%;
    border-radius: 16px;
    border: 1px solid var(--line);
    background: var(--surface-strong);
    padding: 0.85rem 1rem;
    font: inherit;
    color: var(--text);
}

textarea {
    resize: vertical;
}

.alert {
    border-radius: 16px;
    padding: 0.9rem 1rem;
    margin-bottom: 1rem;
}

.alert.success {
    background: rgba(26, 127, 90, 0.12);
    color: var(--accent-strong);
}

.alert.danger {
    background: rgba(185, 78, 72, 0.12);
    color: var(--danger);
}

.metric-card h2 {
    margin-bottom: 0;
    font-size: clamp(1.8rem, 5vw, 2.8rem);
}

.muted {
    color: var(--muted);
}

.login-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 1rem;
}

.login-panel {
    width: min(100%, 540px);
    padding: 2rem;
}

@media (max-width: 860px) {
    .day-layout {
        grid-template-columns: 1fr;
    }

    .topbar {
        flex-direction: column;
    }
}