:root {
    color-scheme: dark;

    --bg: #080c12;
    --bg-elevated: #0c121a;
    --surface: rgba(18, 27, 38, 0.82);
    --surface-solid: #111923;
    --surface-soft: #151f2b;
    --surface-hover: #192635;

    --border: rgba(255, 255, 255, 0.085);
    --border-strong: rgba(124, 199, 255, 0.28);

    --text: #f4f7fa;
    --text-soft: #c2ccd6;
    --muted: #8493a2;
    --muted-dark: #657381;

    --accent: #74c7ff;
    --accent-strong: #99d8ff;
    --accent-dark: #07141e;

    --green: #75dfa6;
    --orange: #ffb36b;
    --red: #ff9898;

    --shadow:
        0 22px 60px rgba(0, 0, 0, 0.32);

    --radius-xl: 28px;
    --radius-lg: 21px;
    --radius-md: 15px;
    --radius-sm: 11px;

    font-family:
        Inter,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;
}

* {
    box-sizing: border-box;
}

html {
    min-height: 100%;
    background: var(--bg);
}

body {
    min-height: 100vh;
    margin: 0;
    color: var(--text);
    background:
        radial-gradient(
            circle at 10% -10%,
            rgba(71, 143, 204, 0.20),
            transparent 34%
        ),
        radial-gradient(
            circle at 100% 20%,
            rgba(42, 91, 137, 0.12),
            transparent 28%
        ),
        var(--bg);
}

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

button,
a {
    -webkit-tap-highlight-color: transparent;
}

a {
    color: inherit;
}

.app-shell {
    min-height: 100vh;
}

.topbar {
    position: sticky;
    z-index: 30;
    top: 0;

    display: flex;
    align-items: center;
    gap: 28px;

    width: min(calc(100% - 28px), 1080px);
    min-height: 72px;
    margin: 12px auto 0;
    padding: 10px 12px 10px 14px;

    border: 1px solid var(--border);
    border-radius: 20px;

    background: rgba(10, 15, 22, 0.80);
    box-shadow: 0 10px 35px rgba(0, 0, 0, 0.22);
    backdrop-filter: blur(22px);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;

    text-decoration: none;
}

.brand-mark {
    display: grid;
    place-items: center;

    width: 38px;
    height: 38px;

    border-radius: 12px;

    color: var(--accent-dark);
    background:
        linear-gradient(
            145deg,
            var(--accent-strong),
            var(--accent)
        );

    font-size: 20px;
    font-weight: 900;

    box-shadow:
        0 8px 24px rgba(80, 176, 240, 0.24);
}

.brand-name {
    font-size: 20px;
    font-weight: 850;
    letter-spacing: -0.7px;
}

.desktop-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-left: auto;
}

.nav-link {
    padding: 10px 13px;
    border-radius: 11px;

    color: var(--muted);
    text-decoration: none;

    font-size: 14px;
    font-weight: 650;

    transition:
        color 0.18s ease,
        background 0.18s ease;
}

.nav-link:hover,
.nav-link.is-active {
    color: var(--text);
    background: rgba(255, 255, 255, 0.065);
}

.nav-link.is-active {
    color: var(--accent-strong);
}

.logout-form {
    margin: 0;
}

.icon-button {
    display: grid;
    place-items: center;

    width: 40px;
    height: 40px;
    padding: 0;

    border: 1px solid var(--border);
    border-radius: 12px;

    color: var(--text-soft);
    background: transparent;

    font-size: 19px;
    cursor: pointer;

    transition:
        border-color 0.18s ease,
        color 0.18s ease,
        background 0.18s ease;
}

.icon-button:hover {
    color: var(--text);
    border-color: var(--border-strong);
    background: rgba(255, 255, 255, 0.055);
}

.page {
    width: min(calc(100% - 32px), 1040px);
    margin: 0 auto;
    padding: 42px 0 72px;
}

.page-heading {
    margin-bottom: 28px;
}

.eyebrow {
    margin-bottom: 9px;
    color: var(--accent);

    font-size: 12px;
    font-weight: 800;
    letter-spacing: 1.2px;
    text-transform: uppercase;
}

.page-title {
    margin: 0;

    font-size: clamp(32px, 6vw, 54px);
    font-weight: 850;
    line-height: 1.04;
    letter-spacing: -2px;
}

.page-subtitle {
    max-width: 680px;
    margin: 12px 0 0;

    color: var(--muted);
    font-size: 15px;
    line-height: 1.6;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;

    margin-bottom: 26px;

    color: var(--muted);
    text-decoration: none;

    font-size: 14px;
    font-weight: 650;
}

.back-link:hover {
    color: var(--accent);
}

.hero {
    position: relative;
    overflow: hidden;

    min-height: 250px;
    margin-bottom: 18px;
    padding: clamp(25px, 5vw, 42px);

    border: 1px solid var(--border);
    border-radius: var(--radius-xl);

    background:
        linear-gradient(
            135deg,
            rgba(42, 93, 133, 0.72),
            rgba(17, 25, 35, 0.94) 60%
        );

    box-shadow: var(--shadow);
}

.hero::after {
    content: "";

    position: absolute;
    top: -90px;
    right: -70px;

    width: 280px;
    height: 280px;

    border-radius: 50%;

    background:
        radial-gradient(
            circle,
            rgba(126, 205, 255, 0.25),
            transparent 67%
        );

    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 650px;
}

.hero-title {
    max-width: 720px;
    margin: 0;

    font-size: clamp(30px, 6vw, 48px);
    line-height: 1.06;
    letter-spacing: -1.6px;
}

.hero-text {
    max-width: 610px;
    margin: 14px 0 0;

    color: #b2beca;
    font-size: 15px;
    line-height: 1.65;
}

.button,
.primary-button,
.secondary-button,
.danger-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;

    min-height: 48px;
    padding: 12px 17px;

    border: 0;
    border-radius: 14px;

    font-weight: 800;
    text-decoration: none;
    cursor: pointer;

    transition:
        transform 0.16s ease,
        box-shadow 0.16s ease,
        background 0.16s ease;
}

.button:active,
.primary-button:active,
.secondary-button:active,
.danger-button:active {
    transform: scale(0.98);
}

.primary-button {
    color: var(--accent-dark);
    background:
        linear-gradient(
            145deg,
            var(--accent-strong),
            var(--accent)
        );

    box-shadow:
        0 10px 28px rgba(74, 165, 227, 0.20);
}

.primary-button:hover {
    box-shadow:
        0 14px 32px rgba(74, 165, 227, 0.28);
}

.secondary-button {
    color: var(--text-soft);
    background: var(--surface-soft);
}

.secondary-button:hover {
    color: var(--text);
    background: var(--surface-hover);
}

.danger-button {
    color: #ffc1c1;
    background: rgba(255, 93, 93, 0.11);
}

.hero-action {
    margin-top: 23px;
}

.stat-grid {
    display: grid;
    grid-template-columns:
        repeat(auto-fit, minmax(175px, 1fr));
    gap: 12px;

    margin: 18px 0 34px;
}

.stat-card {
    min-height: 123px;
    padding: 19px;

    border: 1px solid var(--border);
    border-radius: var(--radius-lg);

    background: var(--surface);
    backdrop-filter: blur(14px);
}

.stat-label {
    color: var(--muted);
    font-size: 12px;
    font-weight: 650;
}

.stat-value {
    margin-top: 11px;

    font-size: clamp(24px, 4vw, 31px);
    font-weight: 850;
    letter-spacing: -1px;
}

.stat-note {
    margin-top: 7px;
    color: var(--muted-dark);
    font-size: 12px;
}

.stat-note a {
    color: var(--accent);
    text-decoration: none;
}

.section-heading {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 15px;

    margin: 36px 0 15px;
}

.section-title {
    margin: 0;
    font-size: 22px;
    letter-spacing: -0.5px;
}

.section-caption {
    color: var(--muted);
    font-size: 13px;
}

.card {
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);

    background: var(--surface);
    backdrop-filter: blur(14px);
}

.workout-grid {
    display: grid;
    grid-template-columns:
        repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.workout-card {
    position: relative;
    overflow: hidden;

    display: flex;
    flex-direction: column;

    min-height: 275px;
    padding: 23px;

    border: 1px solid var(--border);
    border-radius: var(--radius-lg);

    background:
        linear-gradient(
            145deg,
            rgba(20, 30, 41, 0.95),
            rgba(14, 21, 30, 0.92)
        );

    transition:
        transform 0.18s ease,
        border-color 0.18s ease;
}

.workout-card:hover {
    transform: translateY(-2px);
    border-color: var(--border-strong);
}

.workout-day {
    color: var(--accent);

    font-size: 12px;
    font-weight: 850;
    letter-spacing: 0.9px;
    text-transform: uppercase;
}

.workout-name {
    margin: 10px 0 11px;

    font-size: 23px;
    line-height: 1.2;
    letter-spacing: -0.6px;
}

.workout-description {
    margin: 0 0 18px;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.55;
}

.workout-meta {
    margin-top: auto;
    margin-bottom: 15px;

    color: var(--muted-dark);
    font-size: 12px;
}

.full-width {
    width: 100%;
}

.info-panel {
    padding: 20px;

    border: 1px solid var(--border);
    border-radius: var(--radius-lg);

    color: var(--text-soft);
    background: var(--surface);
}

.info-panel a {
    color: var(--accent);
    text-decoration: none;
}

.message {
    margin-bottom: 17px;
    padding: 14px 16px;

    border-radius: var(--radius-md);

    font-size: 14px;
    line-height: 1.45;
}

.message-success {
    color: #baf2d1;
    background: rgba(69, 193, 120, 0.13);
}

.message-error {
    color: #ffc2c2;
    background: rgba(255, 79, 79, 0.13);
}

.exercise-list {
    display: grid;
    gap: 14px;
}

.exercise-card {
    padding: 22px;

    border: 1px solid var(--border);
    border-radius: var(--radius-lg);

    background: var(--surface);
}

.exercise-index {
    color: var(--muted-dark);

    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.7px;
    text-transform: uppercase;
}

.exercise-title {
    margin: 7px 0 13px;
    font-size: 22px;
    letter-spacing: -0.5px;
}

.badge-row {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
    margin-bottom: 16px;
}

.badge {
    padding: 7px 10px;

    border: 1px solid rgba(255, 255, 255, 0.055);
    border-radius: 10px;

    color: var(--text-soft);
    background: rgba(255, 255, 255, 0.045);

    font-size: 12px;
}

.exercise-note {
    margin: -2px 0 16px;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.5;
}

.previous-panel {
    margin-bottom: 17px;
    padding: 14px;

    border: 1px solid rgba(116, 199, 255, 0.17);
    border-radius: 14px;

    background: rgba(65, 130, 177, 0.08);
}

.previous-label {
    margin-bottom: 9px;

    color: var(--accent);
    font-size: 11px;
    font-weight: 850;
    letter-spacing: 0.8px;
    text-transform: uppercase;
}

.previous-values {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
}

.previous-value {
    padding: 7px 9px;

    border-radius: 9px;

    color: var(--text-soft);
    background: rgba(255, 255, 255, 0.055);

    font-size: 12px;
}

.previous-date {
    margin-top: 8px;
    color: var(--muted-dark);
    font-size: 11px;
}

.set-list {
    display: grid;
    gap: 9px;
}

.set-row {
    display: grid;
    grid-template-columns:
        74px minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
    gap: 9px;
}

.set-number {
    color: var(--muted);
    font-size: 13px;
    font-weight: 750;
}

.input-wrap {
    position: relative;
}

.form-input,
.input-wrap input {
    width: 100%;
    min-width: 0;
    padding: 13px 14px;

    border: 1px solid rgba(255, 255, 255, 0.11);
    border-radius: 12px;
    outline: none;

    color: var(--text);
    background: rgba(6, 11, 17, 0.72);

    transition:
        border-color 0.16s ease,
        box-shadow 0.16s ease;
}

.input-wrap input {
    padding-right: 44px;
}

.form-input:focus,
.input-wrap input:focus {
    border-color: rgba(116, 199, 255, 0.72);
    box-shadow:
        0 0 0 3px rgba(116, 199, 255, 0.10);
}

.input-unit {
    position: absolute;
    top: 50%;
    right: 11px;

    color: var(--muted-dark);
    font-size: 11px;

    transform: translateY(-50%);
    pointer-events: none;
}

.form-textarea {
    min-height: 90px;
    resize: vertical;
}

.save-hint {
    margin: 22px 3px 0;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.55;
}

.sticky-actions {
    position: sticky;
    z-index: 20;
    bottom: 0;

    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;

    margin-top: 10px;
    padding: 20px 0 10px;

    background:
        linear-gradient(
            rgba(8, 12, 18, 0),
            rgba(8, 12, 18, 0.96) 32%
        );
}

.list-grid {
    display: grid;
    gap: 12px;
}

.list-card {
    display: block;
    padding: 20px;

    border: 1px solid var(--border);
    border-radius: var(--radius-lg);

    color: inherit;
    background: var(--surface);
    text-decoration: none;

    transition:
        transform 0.17s ease,
        border-color 0.17s ease;
}

.list-card:hover {
    transform: translateY(-2px);
    border-color: var(--border-strong);
}

.list-card-date {
    color: var(--accent);
    font-size: 12px;
    font-weight: 800;
}

.list-card-title {
    margin: 8px 0 15px;
    font-size: 20px;
    font-weight: 800;
}

.metric-grid {
    display: grid;
    grid-template-columns:
        repeat(3, minmax(0, 1fr));
    gap: 8px;
}

.metric {
    padding: 11px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.045);
}

.metric-label {
    color: var(--muted-dark);
    font-size: 10px;
}

.metric-value {
    margin-top: 5px;
    font-size: 15px;
    font-weight: 800;
}

.progress-grid {
    display: grid;
    grid-template-columns:
        repeat(2, minmax(0, 1fr));
    gap: 13px;
}

.progress-card {
    display: block;
    padding: 21px;

    border: 1px solid var(--border);
    border-radius: var(--radius-lg);

    color: inherit;
    background: var(--surface);
    text-decoration: none;

    transition:
        transform 0.17s ease,
        border-color 0.17s ease;
}

.progress-card:hover {
    transform: translateY(-2px);
    border-color: var(--border-strong);
}

.category {
    color: var(--accent);

    font-size: 11px;
    font-weight: 850;
    letter-spacing: 0.8px;
    text-transform: uppercase;
}

.progress-title {
    margin: 8px 0 17px;
    font-size: 20px;
    line-height: 1.25;
}

.two-column-metrics {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.chart-card {
    overflow: hidden;
    padding: 18px;

    border: 1px solid var(--border);
    border-radius: var(--radius-lg);

    background: var(--surface);
}

.chart-header {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}

.chart-name {
    font-weight: 800;
}

.chart-range {
    color: var(--muted);
    font-size: 12px;
}

.chart-scroll {
    overflow-x: auto;
}

.chart {
    display: block;
    width: 100%;
    min-width: 620px;
    height: auto;
}

.chart-grid-line {
    stroke: rgba(255, 255, 255, 0.075);
    stroke-width: 1;
}

.chart-line {
    fill: none;
    stroke: var(--accent);
    stroke-width: 4;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.chart-line-green {
    stroke: var(--green);
}

.chart-point {
    fill: var(--bg);
    stroke: var(--accent);
    stroke-width: 4;
}

.chart-point-green {
    stroke: var(--green);
}

.chart-label {
    fill: var(--muted);
    font-size: 12px;
    text-anchor: middle;
}

.chart-value {
    fill: var(--text);
    font-size: 12px;
    font-weight: 800;
    text-anchor: middle;
}

.measurement-layout {
    display: grid;
    grid-template-columns:
        minmax(280px, 350px) minmax(0, 1fr);
    gap: 17px;
    align-items: start;
}

.form-card {
    position: sticky;
    top: 96px;

    padding: 21px;

    border: 1px solid var(--border);
    border-radius: var(--radius-lg);

    background: var(--surface);
}

.form-title {
    margin: 0 0 19px;
    font-size: 21px;
}

.form-field {
    margin-bottom: 14px;
}

.form-label {
    display: block;
    margin-bottom: 7px;
    color: var(--text-soft);
    font-size: 13px;
}

.form-errors {
    margin-top: 7px;
    color: var(--red);
    font-size: 12px;
}

.form-errors ul {
    margin: 0;
    padding-left: 18px;
}

.measurement-history-card {
    margin-bottom: 11px;
    padding: 18px;

    border: 1px solid var(--border);
    border-radius: var(--radius-lg);

    background: var(--surface);
}

.history-card-header {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: flex-start;
}

.history-date {
    color: var(--accent);
    font-size: 12px;
    font-weight: 850;
}

.history-actions {
    display: flex;
    gap: 6px;
}

.small-action {
    min-height: 34px;
    padding: 7px 10px;

    border: 1px solid var(--border);
    border-radius: 10px;

    color: var(--text-soft);
    background: transparent;

    font-size: 11px;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
}

.small-action-danger {
    color: #ffb8b8;
    border-color: rgba(255, 128, 128, 0.22);
}

.measurement-values {
    display: grid;
    grid-template-columns:
        repeat(auto-fit, minmax(105px, 1fr));
    gap: 8px;
    margin-top: 14px;
}

.measurement-value {
    padding: 11px;
    border-radius: 11px;
    background: rgba(255, 255, 255, 0.045);
}

.measurement-label {
    color: var(--muted-dark);
    font-size: 10px;
}

.measurement-number {
    margin-top: 4px;
    font-size: 15px;
    font-weight: 800;
}

.notes {
    margin: 13px 0 0;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.5;
}

.empty-state {
    padding: 28px;

    border: 1px dashed rgba(255, 255, 255, 0.14);
    border-radius: var(--radius-lg);

    color: var(--muted);
    text-align: center;
}

.result-set-row {
    display: grid;
    grid-template-columns:
        85px 1fr 1fr;
    gap: 9px;

    padding: 11px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.065);
}

.result-set-row:first-of-type {
    border-top: 0;
}

.result-set-number {
    color: var(--muted);
}

.result-set-value {
    font-weight: 800;
}

.positive {
    color: var(--orange);
}

.negative {
    color: var(--green);
}

.mobile-nav {
    display: none;
}

.login-page {
    min-height: 100vh;
    display: grid;
    place-items: center;

    padding:
        max(22px, env(safe-area-inset-top))
        18px
        max(22px, env(safe-area-inset-bottom));

    background:
        radial-gradient(
            circle at 50% -10%,
            rgba(78, 158, 218, 0.27),
            transparent 40%
        ),
        radial-gradient(
            circle at 0 100%,
            rgba(48, 94, 137, 0.15),
            transparent 38%
        ),
        var(--bg);
}

.login-card {
    width: min(100%, 430px);
    padding: 34px;

    border: 1px solid var(--border);
    border-radius: 30px;

    background: rgba(15, 23, 32, 0.86);
    box-shadow: var(--shadow);
    backdrop-filter: blur(22px);
}

.login-brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
}

.login-brand .brand-mark {
    width: 47px;
    height: 47px;
    border-radius: 15px;
    font-size: 24px;
}

.login-brand-name {
    font-size: 31px;
    font-weight: 900;
    letter-spacing: -1.4px;
}

.login-title {
    margin: 33px 0 8px;
    font-size: 28px;
    letter-spacing: -0.9px;
}

.login-subtitle {
    margin: 0 0 25px;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.55;
}

.login-footer {
    margin-top: 19px;
    color: var(--muted-dark);
    font-size: 11px;
    text-align: center;
}

@media (max-width: 760px) {
    .topbar {
        width: calc(100% - 20px);
        min-height: 62px;
        margin-top: 9px;
    }

    .brand-name {
        font-size: 18px;
    }

    .desktop-nav {
        display: none;
    }

    .logout-form {
        margin-left: auto;
    }

    .page {
        width: calc(100% - 26px);
        padding-top: 30px;
        padding-bottom:
            calc(105px + env(safe-area-inset-bottom));
    }

    .mobile-nav {
        position: fixed;
        z-index: 40;
        right: 10px;
        bottom: max(10px, env(safe-area-inset-bottom));
        left: 10px;

        display: grid;
        grid-template-columns: repeat(4, 1fr);

        padding: 8px;

        border: 1px solid var(--border);
        border-radius: 20px;

        background: rgba(10, 15, 22, 0.90);
        box-shadow: 0 16px 45px rgba(0, 0, 0, 0.36);
        backdrop-filter: blur(24px);
    }

    .mobile-nav-link {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 3px;

        padding: 7px 3px;
        border-radius: 13px;

        color: var(--muted);
        text-decoration: none;

        font-size: 10px;
        font-weight: 700;
    }

    .mobile-nav-link.is-active {
        color: var(--accent);
        background: rgba(116, 199, 255, 0.085);
    }

    .mobile-nav-icon {
        font-size: 20px;
        line-height: 1;
    }

    .workout-grid,
    .progress-grid {
        grid-template-columns: 1fr;
    }

    .workout-card {
        min-height: 245px;
    }

    .measurement-layout {
        grid-template-columns: 1fr;
    }

    .form-card {
        position: static;
    }

    .sticky-actions {
        grid-template-columns: 1fr;
        bottom: 80px;
    }
}

@media (max-width: 540px) {
    .page-title {
        letter-spacing: -1.4px;
    }

    .hero {
        min-height: 230px;
        padding: 24px 20px;
    }

    .stat-grid {
        grid-template-columns: 1fr 1fr;
    }

    .stat-card {
        min-height: 112px;
        padding: 16px;
    }

    .set-row {
        grid-template-columns:
            58px minmax(0, 1fr) minmax(0, 1fr);
        gap: 6px;
    }

    .set-number {
        font-size: 11px;
    }

    .input-wrap input {
        padding: 12px 31px 12px 9px;
        font-size: 16px;
    }

    .input-unit {
        right: 7px;
        font-size: 9px;
    }

    .metric-grid {
        grid-template-columns: 1fr;
    }

    .metric {
        display: flex;
        align-items: center;
        justify-content: space-between;
    }

    .metric-value {
        margin-top: 0;
    }

    .two-column-metrics {
        grid-template-columns: 1fr 1fr;
    }

    .login-card {
        padding: 29px 22px;
    }
}