:root {
    color-scheme: dark;
    --vex-bg: #061113;
    --vex-bg-elevated: #091719;
    --vex-surface: rgba(15, 31, 34, 0.94);
    --vex-surface-strong: #112428;
    --vex-surface-soft: #162c30;
    --vex-border: rgba(145, 205, 203, 0.14);
    --vex-border-strong: rgba(63, 218, 199, 0.34);
    --vex-text: #f3fbfa;
    --vex-text-soft: #c2d0d0;
    --vex-muted: #8da1a3;
    --vex-accent: #24d2be;
    --vex-accent-bright: #76f2e2;
    --vex-accent-deep: #108b82;
    --vex-violet: #8d7cf6;
    --vex-coral: #ff7a72;
    --vex-warning: #f5c86b;
    --vex-danger: #ff7f88;
    --vex-success: #66dba8;
    --vex-radius-sm: 12px;
    --vex-radius-md: 18px;
    --vex-radius-lg: 24px;
    --vex-shadow-card: 0 18px 42px rgba(0, 0, 0, 0.22);
    --vex-shadow-action: 0 10px 24px rgba(18, 187, 170, 0.2);
    --vex-space-1: 6px;
    --vex-space-2: 10px;
    --vex-space-3: 14px;
    --vex-space-4: 18px;
    --vex-space-5: 24px;
    --vex-space-6: 32px;
    --vex-focus: 0 0 0 3px rgba(118, 242, 226, 0.34);
}

html,
body {
    background: var(--vex-bg);
    color: var(--vex-text);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
        "Segoe UI", sans-serif;
}

body {
    position: relative;
    min-height: 100dvh;
    padding-bottom: calc(96px + env(safe-area-inset-bottom));
    overflow-x: hidden;
    background:
        radial-gradient(circle at 82% -8%, rgba(141, 124, 246, 0.16), transparent 35%),
        radial-gradient(circle at -12% 18%, rgba(36, 210, 190, 0.13), transparent 33%),
        linear-gradient(180deg, #071416 0%, var(--vex-bg) 42%, #050d0f 100%);
    background-attachment: fixed;
}

body::before {
    position: fixed;
    inset: 0;
    z-index: -1;
    content: "";
    pointer-events: none;
    opacity: 0.18;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
    background-size: 34px 34px;
    mask-image: linear-gradient(to bottom, black, transparent 72%);
}

::selection {
    background: rgba(36, 210, 190, 0.35);
    color: var(--vex-text);
}

.container {
    max-width: 560px;
    padding: max(22px, env(safe-area-inset-top)) 18px
        calc(116px + env(safe-area-inset-bottom));
}

.screen.active {
    animation: vex-screen-enter 180ms ease-out both;
}

h1,
h2,
h3 {
    color: var(--vex-text);
    letter-spacing: -0.035em;
}

h1 {
    margin-bottom: 10px;
    font-size: clamp(30px, 9vw, 38px);
    line-height: 1.05;
}

h2 {
    font-size: 23px;
    line-height: 1.15;
}

h3 {
    font-size: 18px;
    line-height: 1.25;
}

.muted {
    color: var(--vex-muted);
    line-height: 1.55;
}

.section-title {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 31px 0 13px;
    color: var(--vex-text-soft);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.section-title::before {
    width: 4px;
    height: 16px;
    flex: 0 0 4px;
    border-radius: 99px;
    background: linear-gradient(180deg, var(--vex-accent-bright), var(--vex-violet));
    content: "";
    box-shadow: 0 0 14px rgba(36, 210, 190, 0.32);
}

.card,
.stat-card,
.workout-card,
.exercise-card,
.chart-card,
.coach-card {
    border: 1px solid var(--vex-border);
    background:
        linear-gradient(145deg, rgba(255, 255, 255, 0.025), transparent 52%),
        var(--vex-surface);
    box-shadow: var(--vex-shadow-card);
    backdrop-filter: blur(14px);
}

.card {
    padding: 19px;
    border-radius: var(--vex-radius-md);
}

.stat-card {
    position: relative;
    min-height: 112px;
    overflow: hidden;
    border-radius: var(--vex-radius-md);
    padding: 17px;
}

.stat-card::after {
    position: absolute;
    top: 0;
    right: 0;
    width: 56px;
    height: 3px;
    border-radius: 0 0 0 99px;
    background: linear-gradient(90deg, var(--vex-accent), var(--vex-violet));
    content: "";
    opacity: 0.8;
}

.stats-grid {
    gap: 11px;
}

.stat-label,
.progress-eyebrow,
.dashboard-eyebrow {
    color: var(--vex-accent-bright);
    font-weight: 800;
    letter-spacing: 0.09em;
}

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

.stat-value {
    color: var(--vex-text);
    font-size: 29px;
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.04em;
}

.stat-unit {
    color: var(--vex-muted);
}

button {
    min-height: 48px;
    border: 1px solid rgba(118, 242, 226, 0.25);
    border-radius: var(--vex-radius-sm);
    padding: 13px 17px;
    background: linear-gradient(135deg, #17a99d, #168d87);
    color: #f7fffe;
    box-shadow: var(--vex-shadow-action);
    font-size: 15px;
    font-weight: 800;
    line-height: 1.2;
    transition: transform 140ms ease, border-color 140ms ease,
        background 140ms ease, box-shadow 140ms ease;
}

button:hover:not(:disabled) {
    border-color: rgba(118, 242, 226, 0.62);
    background: linear-gradient(135deg, #1cbaac, #179a92);
}

button:active:not(:disabled) {
    opacity: 1;
    transform: translateY(1px) scale(0.992);
    box-shadow: 0 5px 12px rgba(18, 187, 170, 0.18);
}

button:disabled {
    filter: saturate(0.5);
    opacity: 0.48;
}

button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
[tabindex]:focus-visible {
    outline: 2px solid var(--vex-accent-bright);
    outline-offset: 2px;
    box-shadow: var(--vex-focus);
}

.secondary-button {
    border-color: var(--vex-border);
    background: var(--vex-surface-soft);
    color: var(--vex-text-soft);
    box-shadow: none;
}

.secondary-button:hover:not(:disabled) {
    border-color: var(--vex-border-strong);
    background: #1a3438;
}

.danger-button {
    border-color: rgba(255, 127, 136, 0.3);
    background: rgba(113, 38, 47, 0.72);
    color: #ffdadd;
    box-shadow: none;
}

.danger-button:hover:not(:disabled) {
    border-color: rgba(255, 127, 136, 0.55);
    background: rgba(137, 45, 56, 0.84);
}

.small-button {
    min-height: 40px;
    padding: 9px 13px;
}

.button-row {
    gap: 10px;
}

input,
textarea,
select {
    min-height: 50px;
    border: 1px solid var(--vex-border);
    border-radius: var(--vex-radius-sm);
    outline: none;
    background: rgba(5, 17, 19, 0.72);
    color: var(--vex-text);
    padding: 14px 15px;
    line-height: 1.35;
    transition: border-color 150ms ease, background 150ms ease, box-shadow 150ms ease;
}

textarea {
    min-height: 112px;
    line-height: 1.5;
}

input::placeholder,
textarea::placeholder {
    color: #708486;
    opacity: 1;
}

input:hover,
textarea:hover,
select:hover {
    border-color: rgba(145, 205, 203, 0.28);
}

input:focus,
textarea:focus,
select:focus {
    border-color: var(--vex-accent);
    background: rgba(7, 24, 26, 0.92);
    box-shadow: var(--vex-focus);
}

input[type="file"] {
    min-height: 54px;
    padding: 8px;
    color: var(--vex-muted);
}

input[type="file"]::file-selector-button {
    min-height: 36px;
    margin-right: 10px;
    border: 1px solid var(--vex-border-strong);
    border-radius: 9px;
    padding: 8px 11px;
    background: var(--vex-surface-soft);
    color: var(--vex-text);
    font: inherit;
    font-size: 12px;
    font-weight: 700;
}

.profile-form-label {
    margin-bottom: 8px;
    color: var(--vex-text-soft);
    font-size: 12px;
    letter-spacing: 0.02em;
}

.profile-help,
.auth-help,
.social-file-help {
    color: var(--vex-muted);
    line-height: 1.55;
}

/* Authentication shell */
#login {
    min-height: calc(100dvh - 170px);
    padding-top: clamp(46px, 12vh, 104px);
}

.brand {
    color: var(--vex-text);
    font-size: clamp(43px, 13vw, 58px);
    font-weight: 900;
    letter-spacing: -0.065em;
    line-height: 0.96;
    text-shadow: 0 0 36px rgba(36, 210, 190, 0.16);
}

.brand::first-letter {
    color: var(--vex-accent-bright);
}

.brand-subtitle {
    margin: 12px 0 34px;
    color: var(--vex-muted);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.11em;
    text-transform: uppercase;
}

#login > .card {
    border-color: rgba(118, 242, 226, 0.16);
    padding: clamp(20px, 6vw, 28px);
    background:
        linear-gradient(155deg, rgba(36, 210, 190, 0.07), transparent 40%),
        rgba(12, 28, 31, 0.96);
}

.auth-switch {
    border-color: transparent;
    background: transparent;
    color: var(--vex-accent-bright);
    box-shadow: none;
}

.auth-switch:hover:not(:disabled) {
    border-color: var(--vex-border-strong);
    background: rgba(36, 210, 190, 0.07);
}

.auth-valid-icon {
    top: 13px;
    background: var(--vex-success);
    color: #062118;
    box-shadow: 0 0 0 4px rgba(102, 219, 168, 0.1);
}

/* Dashboard and workout surfaces */
.dashboard-eyebrow {
    margin-top: 5px;
    font-size: 11px;
}

.welcome {
    margin: 6px 0 24px;
    font-size: clamp(27px, 8vw, 35px);
    font-weight: 850;
    letter-spacing: -0.045em;
    line-height: 1.08;
}

.workout-card,
.exercise-card {
    padding: 19px;
    border-radius: var(--vex-radius-md);
}

.workout-card:hover,
.exercise-option:hover {
    border-color: var(--vex-border-strong);
}

.category {
    border: 1px solid rgba(36, 210, 190, 0.22);
    border-radius: 99px;
    padding: 5px 10px;
    background: rgba(36, 210, 190, 0.09);
    color: var(--vex-accent-bright);
    font-weight: 750;
    letter-spacing: 0.04em;
}

.workout-meta,
.exercise-submeta {
    color: var(--vex-muted);
}

.workout-volume {
    color: var(--vex-text);
    letter-spacing: -0.03em;
}

.exercise-index {
    color: var(--vex-accent-bright);
}

.exercise-option {
    min-height: 86px;
    border-color: var(--vex-border);
    border-radius: 16px;
    background: var(--vex-surface-strong);
    box-shadow: none;
}

.exercise-option:focus-visible {
    border-color: var(--vex-accent);
    background: #173034;
}

.exercise-thumbnail {
    border-color: var(--vex-border);
    border-radius: 14px;
    background-color: #071315;
}

.picker-overlay {
    background: rgba(1, 8, 9, 0.82);
    backdrop-filter: blur(8px);
}

.picker {
    border: 1px solid var(--vex-border);
    border-bottom: 0;
    border-radius: 26px 26px 0 0;
    background: #0a191b;
    box-shadow: 0 -18px 70px rgba(0, 0, 0, 0.52);
}

.set-header {
    color: var(--vex-muted);
    font-weight: 700;
}

.training-header {
    border: 1px solid var(--vex-border-strong);
    border-radius: var(--vex-radius-lg);
    background:
        radial-gradient(circle at 85% 0%, rgba(141, 124, 246, 0.18), transparent 40%),
        linear-gradient(145deg, #123035, #0d1e21);
    box-shadow: var(--vex-shadow-card);
}

.training-title {
    letter-spacing: -0.035em;
}

.training-time {
    color: var(--vex-accent-bright);
    font-variant-numeric: tabular-nums;
}

.progress-track {
    height: 9px;
    background: rgba(3, 13, 15, 0.7);
}

.progress-fill {
    background: linear-gradient(90deg, var(--vex-accent), var(--vex-violet));
    box-shadow: 0 0 16px rgba(36, 210, 190, 0.36);
}

.set-check {
    border-color: var(--vex-border);
    background: var(--vex-surface-soft);
    box-shadow: none;
}

.set-check.completed {
    border-color: var(--vex-accent-bright);
    background: linear-gradient(145deg, var(--vex-accent), var(--vex-accent-deep));
}

.previous,
.rest-box {
    border: 1px solid var(--vex-border);
    background: rgba(14, 35, 38, 0.78);
}

.rest-box {
    border-radius: var(--vex-radius-md);
}

.rest-time {
    color: var(--vex-accent-bright);
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.05em;
}

/* Data, coaching and progress */
.progress-hero {
    border: 1px solid var(--vex-border-strong);
    border-radius: var(--vex-radius-lg);
    background:
        radial-gradient(circle at 90% 10%, rgba(141, 124, 246, 0.22), transparent 42%),
        linear-gradient(145deg, rgba(28, 79, 75, 0.72), rgba(14, 29, 32, 0.96));
    box-shadow: var(--vex-shadow-card);
}

.progress-main-value {
    font-size: 44px;
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.055em;
}

.range-buttons {
    padding: 4px;
    border: 1px solid var(--vex-border);
    border-radius: 14px;
    background: rgba(4, 14, 16, 0.6);
}

.range-buttons button {
    min-height: 40px;
    border: 0;
    border-radius: 10px;
    background: transparent;
    color: var(--vex-muted);
    box-shadow: none;
}

.range-buttons button.active {
    background: linear-gradient(135deg, #1d827b, #176660);
    color: var(--vex-text);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.chart-card {
    padding: 17px;
    border-radius: var(--vex-radius-md);
}

.chart-axis-label {
    color: var(--vex-muted);
}

.metric-row,
.pr-row {
    border-bottom-color: var(--vex-border);
    padding: 14px 0;
}

.metric-label {
    color: var(--vex-muted);
}

.coach-card {
    border-radius: var(--vex-radius-md);
    padding: 17px;
}

.coach-message {
    color: var(--vex-text-soft);
}

.coach-action {
    border-top-color: var(--vex-border);
    color: var(--vex-accent-bright);
}

.coach-priority,
.progress-status {
    border-radius: 99px;
    padding: 5px 8px;
}

.progress-analysis-item,
.badge,
.tracklog-exercise {
    border: 1px solid var(--vex-border);
    border-radius: 16px;
    background: var(--vex-surface-strong);
}

.badge {
    min-height: 132px;
}

.badge:not(.locked) {
    border-color: rgba(141, 124, 246, 0.3);
    background:
        radial-gradient(circle at 50% 0%, rgba(141, 124, 246, 0.17), transparent 52%),
        var(--vex-surface-strong);
}

.tracklog-table th,
.tracklog-table td,
.tracklog-set-table th,
.tracklog-set-table td {
    border-bottom-color: var(--vex-border);
}

.tracklog-table th,
.tracklog-set-table th {
    color: var(--vex-text-soft);
}

/* Profile and social */
.social-profile-button {
    border-color: var(--vex-accent-bright);
    background: linear-gradient(145deg, var(--vex-accent), var(--vex-violet));
    box-shadow: 0 0 0 5px rgba(36, 210, 190, 0.1),
        0 10px 24px rgba(0, 0, 0, 0.28);
    transition: transform 150ms ease, box-shadow 150ms ease;
}

.social-profile-button:hover:not(:disabled),
.social-profile-button:focus-visible {
    transform: translateY(-1px) scale(1.03);
    box-shadow: 0 0 0 5px rgba(36, 210, 190, 0.16),
        0 12px 28px rgba(0, 0, 0, 0.34);
}

.profile-avatar {
    width: 96px;
    height: 96px;
    border: 3px solid var(--vex-accent-bright);
    background: linear-gradient(145deg, var(--vex-accent), var(--vex-violet));
    box-shadow: 0 0 0 7px rgba(36, 210, 190, 0.08),
        0 16px 30px rgba(0, 0, 0, 0.3);
}

.profile-name {
    letter-spacing: -0.035em;
}

.profile-username {
    color: var(--vex-muted);
}

.social-privacy-note {
    border-color: var(--vex-border-strong);
    border-radius: 16px;
    background: rgba(16, 47, 47, 0.68);
    color: var(--vex-text-soft);
}

.social-top-tabs {
    top: max(7px, env(safe-area-inset-top));
    border-color: var(--vex-border);
    border-radius: 17px;
    background: rgba(8, 22, 24, 0.9);
    box-shadow: 0 14px 34px rgba(0, 0, 0, 0.34);
    backdrop-filter: blur(18px);
}

.social-top-tab {
    min-height: 42px;
    border-radius: 12px;
    color: var(--vex-muted);
    box-shadow: none;
}

.social-top-tab.active,
.social-top-tab[aria-selected="true"] {
    border-color: rgba(118, 242, 226, 0.42);
    background: linear-gradient(145deg, #195e5a, #174743);
    color: var(--vex-text);
    box-shadow: inset 0 -2px 0 var(--vex-accent-bright);
}

.social-person,
.social-post {
    border-color: var(--vex-border);
    border-radius: 16px;
    background: var(--vex-surface-strong);
}

.social-avatar {
    border: 1px solid rgba(118, 242, 226, 0.3);
    background: linear-gradient(145deg, #23635f, #374c75);
}

.social-person-status,
.social-post-meta,
.social-empty,
.social-loading {
    color: var(--vex-muted);
}

.health-card {
    border-color: var(--vex-border-strong);
    background:
        radial-gradient(circle at 100% 0%, rgba(141, 124, 246, 0.12), transparent 40%),
        linear-gradient(155deg, #102826, #101d21 64%);
}

.health-card-icon {
    background: rgba(36, 210, 190, 0.13);
    color: var(--vex-accent-bright);
}

.health-status-grid,
.health-permission-option {
    border: 1px solid var(--vex-border);
    background: rgba(5, 17, 19, 0.55);
}

.privacy-warning,
.error-box {
    border: 1px solid rgba(255, 127, 136, 0.3);
    border-radius: 14px;
    background: rgba(76, 27, 34, 0.7);
    color: #ffc5ca;
}

.success-box {
    border: 1px solid rgba(102, 219, 168, 0.28);
    border-radius: 14px;
    background: rgba(21, 67, 52, 0.68);
    color: #b5f2d5;
}

/* Empty, loading and connection feedback */
.empty,
.loading,
.coach-empty,
.chart-empty,
.social-empty,
.social-loading {
    border: 1px dashed var(--vex-border);
    border-radius: 16px;
    background: rgba(8, 22, 24, 0.42);
    color: var(--vex-muted);
    line-height: 1.5;
}

.loading,
.social-loading {
    position: relative;
    padding-top: 38px;
}

.loading::before,
.social-loading::before {
    position: absolute;
    top: 14px;
    left: calc(50% - 9px);
    width: 18px;
    height: 18px;
    border: 2px solid rgba(118, 242, 226, 0.18);
    border-top-color: var(--vex-accent-bright);
    border-radius: 50%;
    content: "";
    animation: vex-spin 760ms linear infinite;
}

#connectionStatus {
    display: inline-flex;
    width: 100%;
    align-items: center;
    justify-content: center;
    gap: 7px;
    margin-top: 15px;
    color: var(--vex-muted);
}

.connection-ok {
    color: var(--vex-success);
}

.connection-error {
    color: var(--vex-danger);
}

/* Main navigation */
.bottom-nav {
    height: calc(82px + env(safe-area-inset-bottom));
    border-top: 1px solid var(--vex-border);
    background: rgba(6, 17, 19, 0.88);
    box-shadow: 0 -14px 38px rgba(0, 0, 0, 0.34);
    backdrop-filter: blur(20px);
}

.bottom-nav-inner {
    max-width: 560px;
    height: 82px;
    gap: 4px;
    padding: 7px 8px 6px;
}

.nav-button {
    position: relative;
    min-width: 0;
    min-height: 66px;
    padding: 8px 3px 6px;
    border: 1px solid transparent;
    border-radius: 15px;
    color: #74898b;
    box-shadow: none;
    font-size: 10px;
    font-weight: 650;
    transition: color 150ms ease, background 150ms ease, transform 150ms ease;
}

.nav-button:hover:not(:disabled) {
    border-color: transparent;
    background: rgba(36, 210, 190, 0.06);
}

.nav-button.active,
.nav-button[aria-current="page"] {
    border-color: rgba(118, 242, 226, 0.2);
    background: linear-gradient(155deg, rgba(32, 111, 105, 0.78), rgba(19, 63, 63, 0.74));
    color: var(--vex-accent-bright);
    box-shadow: inset 0 2px 0 var(--vex-accent), 0 8px 16px rgba(0, 0, 0, 0.2);
    font-weight: 800;
}

.nav-icon {
    margin-bottom: 4px;
    font-size: 21px;
    line-height: 1;
    transition: transform 150ms ease;
}

.nav-button.active .nav-icon,
.nav-button[aria-current="page"] .nav-icon {
    transform: translateY(-1px) scale(1.07);
}

@keyframes vex-screen-enter {
    from {
        opacity: 0;
        transform: translateY(5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes vex-spin {
    to {
        transform: rotate(360deg);
    }
}

@media (max-width: 390px) {
    .container {
        padding-right: 14px;
        padding-left: 14px;
    }

    .card,
    .workout-card,
    .exercise-card {
        padding: 16px;
    }

    .stat-card {
        min-height: 105px;
        padding: 15px;
    }

    .stat-value {
        font-size: 26px;
    }

    .button-row {
        flex-wrap: wrap;
    }

    .button-row button {
        min-width: 130px;
    }

    .nav-button {
        font-size: 9px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

@media (prefers-contrast: more) {
    :root {
        --vex-border: rgba(210, 242, 240, 0.4);
        --vex-muted: #b5c5c6;
    }

    button,
    input,
    textarea,
    select,
    .card,
    .stat-card {
        border-width: 2px;
    }
}