/* ===== CSS Variables / Design Tokens ===== */
:root {
    --color-primary: #6366f1;
    --color-primary-hover: #4f46e5;
    --color-primary-light: #e0e7ff;
    --color-primary-subtle: #eef2ff;
    --color-accent: #f59e0b;
    --color-accent-hover: #d97706;
    --color-success: #10b981;
    --color-success-bg: #ecfdf5;
    --color-error: #ef4444;
    --color-error-bg: #fef2f2;
    --color-text: #1e293b;
    --color-text-secondary: #64748b;
    --color-text-muted: #94a3b8;
    --color-bg: #f8fafc;
    --color-surface: #ffffff;
    --color-border: #e2e8f0;
    --color-border-focus: #6366f1;
    --shadow-sm: 0 1px 2px rgba(0,0,0,.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,.07), 0 2px 4px -2px rgba(0,0,0,.05);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.08), 0 4px 6px -4px rgba(0,0,0,.04);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,.1), 0 8px 10px -6px rgba(0,0,0,.05);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-full: 9999px;
    --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --transition: 0.2s cubic-bezier(.4,0,.2,1);
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary-hover); }

h1, h2, h3, h4 { font-weight: 700; line-height: 1.25; color: var(--color-text); }
h1 { font-size: 1.875rem; letter-spacing: -0.025em; }
h2 { font-size: 1.375rem; letter-spacing: -0.02em; }
h3 { font-size: 1.125rem; }
h1 { margin-bottom: 0.85rem; }

/* ===== Container ===== */
.container {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem 1.5rem 4rem;
    flex: 1;
}

/* ===== Navigation ===== */
nav {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(12px);
    background: rgba(255,255,255,.85);
}

.nav-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-brand {
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--color-text) !important;
    letter-spacing: -0.03em;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    flex-wrap: wrap;
}

.nav-links a {
    padding: 0.4rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: all var(--transition);
}

.nav-links a:hover {
    background: var(--color-primary-subtle);
    color: var(--color-primary);
}

.nav-logout {
    background: none;
    border: 1px solid var(--color-border);
    padding: 0.4rem 0.9rem;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition);
    font-family: var(--font-sans);
}

.nav-logout:hover {
    background: var(--color-error-bg);
    color: var(--color-error);
    border-color: var(--color-error);
}

/* ===== Impersonation ===== */
.impersonate-wrapper {
    display: inline-flex;
    align-items: center;
    position: relative;
}

.impersonate-dropdown {
    position: relative;
    display: inline-block;
}

.btn-impersonate {
    background: none;
    border: 1px solid var(--color-border);
    padding: 0.4rem 0.9rem;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition);
    font-family: var(--font-sans);
}

.btn-impersonate:hover {
    background: var(--color-primary-subtle);
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-impersonate.active {
    background: #ede9fe;
    color: #7c3aed;
    border-color: #7c3aed;
}

.impersonate-menu {
    display: none;
    position: absolute;
    right: 0;
    top: 100%;
    padding-top: 0.25rem;
    background: transparent;
    z-index: 100;
    min-width: 180px;
}

.impersonate-menu-inner {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    padding: 0.25rem 0;
}

.impersonate-dropdown:hover .impersonate-menu {
    display: block;
}

.impersonate-menu-inner form {
    display: block;
}

.impersonate-menu-inner button {
    display: block;
    width: 100%;
    text-align: left;
    padding: 0.5rem 1rem;
    border: none;
    background: none;
    font-size: 0.875rem;
    font-family: var(--font-sans);
    color: var(--color-text);
    cursor: pointer;
    transition: background var(--transition);
}

.impersonate-menu-inner button:hover {
    background: var(--color-primary-subtle);
}

.impersonate-menu-inner .stop-impersonate {
    color: var(--color-error);
    border-top: 1px solid var(--color-border);
    margin-top: 0.25rem;
    padding-top: 0.5rem;
}

.impersonate-menu-inner .stop-impersonate:hover {
    background: var(--color-error-bg);
}

/* ===== Cards ===== */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition), transform var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

/* ===== Dashboard Grid ===== */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}

.dashboard-grid .card h3 {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.75rem;
}

.dashboard-grid .card p {
    margin-top: 0.35rem;
    font-size: 0.95rem;
    color: var(--color-text-secondary);
}

.dashboard-grid .card strong {
    color: var(--color-text);
    font-weight: 700;
}

/* ===== Progress Bar ===== */
.progress-bar {
    width: 100%;
    height: 10px;
    background: var(--color-border);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin: 0.5rem 0;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), #818cf8);
    border-radius: var(--radius-full);
    transition: width 0.6s cubic-bezier(.22,1,.36,1);
    min-width: 4px;
}

/* ===== Merged KPI Layout ===== */
.kpi-merged {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1rem;
}

.kpi-merged .card {
    margin: 0;
}

.kpi-row-stats {
    display: flex;
    gap: 1rem;
    margin-top: 0.5rem;
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    flex-wrap: wrap;
}

@media (max-width: 640px) {
    .kpi-merged {
        grid-template-columns: 1fr;
    }
}

/* ===== Streak ===== */
.streak-number {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-top: 0.25rem;
}

/* ===== Sections ===== */
.section {
    margin-top: 2.5rem;
}

.section h2 {
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--color-border);
}

/* ===== Activity List ===== */
.activity-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.activity-item a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 1rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    transition: all var(--transition);
}

.activity-item a:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-subtle);
    box-shadow: var(--shadow-sm);
}

.activity-type-badge {
    display: inline-block;
    padding: 0.2rem 0.65rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.activity-date {
    margin-left: auto;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* ===== Empty State ===== */
.empty-state {
    text-align: center;
    padding: 2.5rem 1rem;
    color: var(--color-text-muted);
    background: var(--color-primary-subtle);
    border-radius: var(--radius-lg);
    border: 2px dashed var(--color-border);
}

.empty-state a { font-weight: 600; }

/* ===== History ===== */
.history-month-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.history-container {
    max-width: 1280px;
}

.history-month-header h2 {
    margin: 0;
    min-width: 210px;
    text-align: center;
    text-transform: capitalize;
}

.history-goal-card {
    margin-top: 1.5rem;
    margin-bottom: 1rem;
}

.history-goal-card h3 {
    margin-bottom: 0.75rem;
}

.history-goal-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(130px, 1fr));
    gap: 0.75rem;
}

.history-table-wrap {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
}

.history-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.history-table thead th {
    position: sticky;
    top: 64px;
    z-index: 900;
    text-align: left;
    background: #f1f5f9;
    color: var(--color-text-secondary);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 0.7rem 0.6rem;
    border-bottom: 1px solid var(--color-border);
}

.history-table tbody td {
    font-size: 0.9rem;
    padding: 0.55rem 0.6rem;
    border-bottom: 1px solid var(--color-border);
    vertical-align: middle;
}

.history-table tbody tr:last-child td {
    border-bottom: none;
}

.history-table tbody tr.history-row-today td {
    background: #fff7ed;
}

.history-table tfoot td {
    background: #f8fafc;
    border-top: 2px solid var(--color-border);
    font-weight: 600;
    padding: 0.65rem 0.6rem;
}

.history-summary-sep {
    margin: 0 0.55rem;
    color: var(--color-text-muted);
}

.history-weight-form {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.history-weight-view {
    white-space: nowrap;
}

.history-weight-form .input-small {
    width: 68px;
    min-width: 68px;
    padding: 0.35rem 0.45rem;
}

.history-col-weight {
    width: 86px;
    min-width: 86px;
}

.history-col-date {
    width: 98px;
    min-width: 98px;
    white-space: nowrap;
}

.history-col-goal {
    width: 84px;
    min-width: 84px;
    white-space: nowrap;
}

.history-col-running {
    width: 82px;
    min-width: 82px;
    white-space: nowrap;
}

.history-col-actions {
    width: 86px;
    min-width: 86px;
    text-align: right;
}

.history-notes-input {
    width: 100%;
    min-width: 220px;
    max-width: 360px;
    height: 34px;
    padding: 0.4rem 0.55rem;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    background: #ffffff;
    font-size: 0.86rem;
    color: var(--color-text);
    transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

.history-notes-input::placeholder {
    color: #94a3b8;
}

.history-notes-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99,102,241,.14);
    background: #fff;
}

.history-edit-field {
    display: none;
}

.history-row-editing .history-weight-view {
    display: none;
}

.history-row-editing .history-notes-view {
    display: none;
}

.history-row-editing .history-edit-field {
    display: inline-block;
}

.history-row-editing .history-edit-btn {
    display: none;
}

.history-day-row.has-activity-details {
    cursor: pointer;
}

.history-workout-details-row {
    display: none;
}

.history-workout-details-row.open {
    display: table-row;
}

.history-workout-details {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    background: #f8fafc;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 0.5rem 0.6rem;
}

.history-activity-detail + .history-activity-detail {
    margin-top: 0.7rem;
    padding-top: 0.7rem;
    border-top: 1px solid var(--color-border);
}

.history-activity-head {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    flex-wrap: wrap;
}

.history-activity-link {
    font-weight: 700;
}

.history-activity-duration {
    color: var(--color-text-secondary);
}

.history-activity-notes {
    color: var(--color-text-secondary);
    font-style: italic;
}

.history-activity-workout {
    margin-top: 0.45rem;
}

.history-hidden-submit {
    display: none;
}

@media (max-width: 900px) {
    .history-goal-grid {
        grid-template-columns: repeat(2, minmax(130px, 1fr));
    }
}

/* ===== Achievement Feed Items ===== */
.achievement-item a {
    border-left: 3px solid #f59e0b;
}

.achievement-item a:hover {
    border-color: #f59e0b;
    background: #fffbeb;
}

.user-avatar {
    font-size: 1.25rem;
    line-height: 1;
}

.achievement-type-badge {
    display: inline-block;
    padding: 0.2rem 0.65rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    background: linear-gradient(135deg, #fef3c7, #fde68a);
    color: #92400e;
    border-radius: var(--radius-full);
    white-space: nowrap;
}

/* ===== Level Up Feed Items ===== */
.levelup-item a {
    border-left: 3px solid #8b5cf6;
}

.levelup-item a:hover {
    border-color: #8b5cf6;
    background: #f5f3ff;
}

/* ===== Family Level Up Feed Items ===== */
.family-levelup-item a {
    border-left: 3px solid #10b981;
}

.family-levelup-item a:hover {
    border-color: #10b981;
    background: #ecfdf5;
}

/* ===== Next Goal (Dashboard KPI) ===== */
.next-goal {
    margin-top: 0.75rem;
    padding: 0.5rem 0.75rem;
    background: linear-gradient(135deg, #fef3c7, #fde68a);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    color: #92400e;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* ===== Family Goal Feed Items ===== */
.family-goal-item a {
    border-left: 3px solid #f59e0b;
}

.family-goal-item a:hover {
    border-color: #f59e0b;
    background: #fffbeb;
}

.family-goal-type-badge {
    display: inline-block;
    padding: 0.2rem 0.65rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    background: linear-gradient(135deg, #fef3c7, #fde68a);
    color: #92400e;
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.family-levelup-type-badge {
    display: inline-block;
    padding: 0.2rem 0.65rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    background: linear-gradient(135deg, #d1fae5, #a7f3d0);
    color: #065f46;
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.levelup-type-badge {
    display: inline-block;
    padding: 0.2rem 0.65rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    background: linear-gradient(135deg, #ede9fe, #ddd6fe);
    color: #5b21b6;
    border-radius: var(--radius-full);
    white-space: nowrap;
}

/* ===== Achievements ===== */
.achievements-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.achievement-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.45rem 0.9rem;
    background: linear-gradient(135deg, #fef3c7, #fde68a);
    border: 1px solid #fcd34d;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    color: #92400e;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.6rem 1.25rem;
    font-size: 0.9rem;
    font-weight: 600;
    font-family: var(--font-sans);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    color: var(--color-text-secondary);
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition);
    gap: 0.4rem;
}

.btn:hover {
    background: var(--color-bg);
    color: var(--color-text);
    border-color: var(--color-text-muted);
}

.btn-primary {
    background: var(--color-primary);
    color: #fff !important;
    border-color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-danger {
    background: #dc2626;
    border-color: #dc2626;
    color: #fff !important;
    box-shadow: var(--shadow-sm);
}

.btn-danger:hover {
    background: #b91c1c;
    border-color: #b91c1c;
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-large {
    padding: 0.85rem 2rem;
    font-size: 1rem;
    border-radius: var(--radius-md);
    margin-top: 1.5rem;
}

.advanced-reset-btn {
    margin-top: 0.75rem;
}

.advanced-reset-text {
    margin-top: 0.5rem;
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
    border-radius: var(--radius-sm);
}

/* ===== Forms ===== */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 0.4rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.65rem 0.85rem;
    font-size: 0.95rem;
    font-family: var(--font-sans);
    color: var(--color-text);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--color-border-focus);
    box-shadow: 0 0 0 3px rgba(99,102,241,.15);
}

.form-group textarea {
    resize: vertical;
    min-height: 60px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* ===== Emoji Picker ===== */
.emoji-field {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    position: relative;
}

.emoji-input {
    width: 100%;
    flex: 1;
}

.emoji-trigger {
    padding: 0.4rem 0.6rem;
    line-height: 1;
}

.emoji-picker {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    z-index: 20;
    display: none;
    min-width: 260px;
    max-width: 320px;
    padding: 0.6rem;
    background: #fff;
    border: 1px solid #d7dbe2;
    border-radius: 8px;
    box-shadow: 0 12px 30px rgba(0,0,0,0.12);
}

.emoji-picker.open {
    display: block;
}

.emoji-picker-header {
    margin-bottom: 0.5rem;
}

.emoji-search {
    width: 100%;
    padding: 0.45rem 0.6rem;
    font-size: 0.85rem;
    border: 1px solid #d7dbe2;
    border-radius: 6px;
    background: #f8fafc;
}

.emoji-tabs {
    display: flex;
    gap: 0.35rem;
    flex-wrap: wrap;
    margin-bottom: 0.5rem;
}

.emoji-tab {
    border: 1px solid #d7dbe2;
    background: #f7f8fb;
    color: #4b5563;
    border-radius: 999px;
    padding: 0.2rem 0.55rem;
    font-size: 0.75rem;
    cursor: pointer;
}

.emoji-tab.active {
    border-color: #7c8cf2;
    background: #eef1ff;
    color: #2f3cc7;
}

.emoji-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 0.4rem;
    max-height: 180px;
    overflow: auto;
    padding-right: 0.2rem;
}

.emoji-btn {
    border: none;
    background: #f4f6f9;
    border-radius: 6px;
    padding: 0.35rem;
    cursor: pointer;
    font-size: 1.1rem;
}

.emoji-btn:hover {
    background: #e7ebf3;
}

.emoji-picker.simple {
    position: absolute;
    display: none;
    top: calc(100% + 6px);
    left: 0;
    z-index: 50;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 0.6rem;
    background: var(--color-surface);
}

.emoji-picker.simple.open {
    display: block;
}

.emoji-choice {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    padding: 0.35rem;
    cursor: pointer;
    transition: all var(--transition);
}

.emoji-choice input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.emoji-choice span {
    font-size: 1.2rem;
}

.emoji-choice:has(input:checked) {
    border-color: var(--color-primary);
    background: var(--color-primary-subtle);
}

.emoji-choice:hover {
    border-color: var(--color-border);
    background: var(--color-bg);
}

/* ===== Type Selector (Activity) ===== */
.type-selector {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    margin-top: 0.4rem;
}

.type-btn {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    background: var(--color-surface);
    border: 1.5px solid var(--color-border);
    color: var(--color-text-secondary);
    transition: all var(--transition);
    text-decoration: none;
}

.type-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: var(--color-primary-subtle);
}

.type-btn.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
    box-shadow: var(--shadow-sm);
}

/* ===== Workout Section ===== */
#workoutSection h3 {
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0;
    margin-bottom: 1rem;
}

.workout-add-btn {
    margin-top: 0;
    margin-bottom: 0.75rem;
}

.workout-entry {
    margin-bottom: 1.25rem;
    padding: 1.25rem;
}

.sets-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin-top: 0.75rem;
    font-size: 0.9rem;
}

.sets-table thead th {
    background: var(--color-bg);
    padding: 0.5rem 0.65rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-muted);
    border-bottom: 2px solid var(--color-border);
    text-align: left;
}

.sets-table thead th:first-child { border-radius: var(--radius-sm) 0 0 0; }
.sets-table thead th:last-child { border-radius: 0 var(--radius-sm) 0 0; }

.sets-table tbody td {
    padding: 0.45rem 0.5rem;
    border-bottom: 1px solid var(--color-border);
    vertical-align: middle;
}

.sets-table tbody tr:last-child td { border-bottom: none; }

/* ===== Template Exercises Table ===== */
.template-exercises-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.template-exercises-table thead th {
    background: var(--color-bg);
    padding: 0.5rem 0.65rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-muted);
    border-bottom: 2px solid var(--color-border);
    text-align: left;
}

.template-exercises-table thead th:first-child { border-radius: var(--radius-sm) 0 0 0; }
.template-exercises-table thead th:last-child { border-radius: 0 var(--radius-sm) 0 0; }

.template-exercises-table tbody td {
    padding: 0.4rem 0.5rem;
    border-bottom: 1px solid var(--color-border);
    vertical-align: middle;
}

.template-exercises-table tbody tr:last-child td { border-bottom: none; }

.template-exercises-table input,
.template-exercises-table select,
.sets-table input {
    width: 100%;
    padding: 0.35rem 0.5rem;
    font-size: 0.875rem;
    font-family: var(--font-sans);
    color: var(--color-text);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition);
    outline: none;
}

.template-exercises-table input:focus,
.template-exercises-table select:focus,
.sets-table input:focus {
    border-color: var(--color-border-focus);
    box-shadow: 0 0 0 3px rgba(99,102,241,.15);
}

.template-exercises-table .row-num {
    width: 2rem;
    text-align: center;
    color: var(--color-text-muted);
    font-weight: 600;
}

.reorder-buttons {
    white-space: nowrap;
    width: 3.5rem;
    text-align: center;
}

.btn-reorder {
    padding: 0.15rem 0.4rem !important;
    font-size: 0.7rem !important;
    line-height: 1;
    min-width: 0;
    vertical-align: middle;
}

.input-small {
    width: 80px !important;
    padding: 0.4rem 0.5rem !important;
    font-size: 0.875rem !important;
    text-align: center;
}

/* ===== Alerts ===== */
.alert {
    padding: 0.85rem 1.15rem;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 1.25rem;
}

.alert-error {
    background: var(--color-error-bg);
    color: var(--color-error);
    border: 1px solid #fecaca;
}

.alert-success {
    background: var(--color-success-bg);
    color: #065f46;
    border: 1px solid #a7f3d0;
}

/* ===== Login Page ===== */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #eef2ff 0%, #f8fafc 50%, #ecfdf5 100%);
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 2.5rem;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    text-align: center;
}

.login-container h1 {
    font-size: 1.75rem;
    margin-bottom: 0.25rem;
}

.login-container h2 {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text-muted);
    margin-bottom: 1.75rem;
}

.login-container .form-group { text-align: left; }

.login-container .btn-primary {
    width: 100%;
    margin-top: 0.5rem;
    padding: 0.75rem;
    font-size: 1rem;
}

/* ===== Celebration Overlay (Level-up & Achievements) ===== */
.celebration-overlay {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    pointer-events: none;
    animation: celebrationFadeOut 0.6s ease-in 9.4s forwards;
}

.celebration-overlay.stack-top {
    justify-content: center;
    transform: translateY(-14vh);
}

.celebration-overlay.stack-bottom {
    justify-content: center;
    transform: translateY(14vh);
}

.celebration-overlay.stacked-center {
    justify-content: center;
    transform: translateY(0);
}

@media (max-width: 640px) {
    .celebration-overlay.stack-top {
        transform: translateY(-10vh);
    }

    .celebration-overlay.stack-bottom {
        transform: translateY(10vh);
    }
}

.celebration-overlay.hidden {
    display: none;
}

.toast {
    pointer-events: auto;
    position: relative;
    overflow: visible;
    padding: 1.25rem 2.5rem;
    background: var(--color-surface);
    border: 2px solid #fcd34d;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl), 0 0 40px rgba(252, 211, 77, 0.25);
    font-weight: 700;
    font-size: 1.05rem;
    text-align: center;
    animation: tada 0.8s ease-in-out;
}

/* Confetti particles around the toast */
.toast::before,
.toast::after {
    content: '';
    position: absolute;
    inset: -20px;
    pointer-events: none;
    z-index: -1;
}

.confetti-container {
    position: absolute;
    inset: -60px;
    pointer-events: none;
    overflow: visible;
}

.confetti-piece {
    position: absolute;
    width: 10px;
    height: 10px;
    border-radius: 2px;
    opacity: 0;
    animation: confettiFall 2.5s ease-in-out forwards;
}

.confetti-piece:nth-child(1)  { left: 5%;  background: #ff6b6b; animation-delay: 0s;    top: 50%; }
.confetti-piece:nth-child(2)  { left: 15%; background: #ffd93d; animation-delay: 0.1s;  top: 50%; border-radius: 50%; }
.confetti-piece:nth-child(3)  { left: 25%; background: #6bcb77; animation-delay: 0.15s; top: 50%; }
.confetti-piece:nth-child(4)  { left: 35%; background: #4d96ff; animation-delay: 0.05s; top: 50%; border-radius: 50%; }
.confetti-piece:nth-child(5)  { left: 45%; background: #ff6bb5; animation-delay: 0.2s;  top: 50%; }
.confetti-piece:nth-child(6)  { left: 55%; background: #ffd93d; animation-delay: 0.08s; top: 50%; border-radius: 50%; }
.confetti-piece:nth-child(7)  { left: 65%; background: #6bcb77; animation-delay: 0.18s; top: 50%; }
.confetti-piece:nth-child(8)  { left: 75%; background: #ff6b6b; animation-delay: 0.12s; top: 50%; border-radius: 50%; }
.confetti-piece:nth-child(9)  { left: 85%; background: #4d96ff; animation-delay: 0.07s; top: 50%; }
.confetti-piece:nth-child(10) { left: 95%; background: #ff6bb5; animation-delay: 0.22s; top: 50%; border-radius: 50%; }
.confetti-piece:nth-child(11) { left: 10%; background: #ffd93d; animation-delay: 0.13s; top: 50%; }
.confetti-piece:nth-child(12) { left: 30%; background: #6bcb77; animation-delay: 0.03s; top: 50%; border-radius: 50%; }
.confetti-piece:nth-child(13) { left: 50%; background: #4d96ff; animation-delay: 0.25s; top: 50%; }
.confetti-piece:nth-child(14) { left: 70%; background: #ff6b6b; animation-delay: 0.16s; top: 50%; border-radius: 50%; }
.confetti-piece:nth-child(15) { left: 90%; background: #ffd93d; animation-delay: 0.09s; top: 50%; }

@keyframes confettiFall {
    0%   { opacity: 1; transform: translateY(0) rotate(0deg) scale(1); }
    25%  { opacity: 1; transform: translateY(-80px) rotate(180deg) scale(1.2); }
    50%  { opacity: 0.8; transform: translateY(-40px) rotate(360deg) scale(0.9); }
    75%  { opacity: 0.5; transform: translateY(20px) rotate(540deg) scale(0.7); }
    100% { opacity: 0; transform: translateY(80px) rotate(720deg) scale(0.3); }
}

@keyframes tada {
    0%   { opacity: 0; transform: scale(0.3) rotate(0deg); }
    10%  { opacity: 1; transform: scale(1.1) rotate(-3deg); }
    20%  { transform: scale(1.1) rotate(3deg); }
    30%  { transform: scale(1.1) rotate(-3deg); }
    40%  { transform: scale(1.1) rotate(3deg); }
    50%  { transform: scale(1.1) rotate(-2deg); }
    60%  { transform: scale(1.05) rotate(2deg); }
    70%  { transform: scale(1.05) rotate(-1deg); }
    80%  { transform: scale(1) rotate(1deg); }
    100% { transform: scale(1) rotate(0deg); }
}

@keyframes celebrationFadeOut {
    from { opacity: 1; }
    to   { opacity: 0; }
}

/* ===== Dashboard ===== */
.dashboard-log-activity {
    margin-top: 1rem;
    float: right;
}

/* ===== Admin Layout (Sidebar + Content) ===== */
.admin-layout {
    display: flex;
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
    gap: 2rem;
    min-height: calc(100vh - 200px);
}

.admin-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    margin-bottom: 1.5rem;
}

.admin-sidebar {
    flex-shrink: 0;
    width: 220px;
}

.admin-sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    position: sticky;
    top: 5rem;
    z-index: 1;
}

.admin-sidebar-nav a {
    display: block;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    color: var(--color-text);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: background var(--transition), color var(--transition);
}

.admin-sidebar-nav a:hover {
    background: var(--color-primary-light);
    color: var(--color-primary);
}

.admin-sidebar-nav a.active {
    background: var(--color-primary);
    color: #fff;
    font-weight: 600;
}

.admin-content {
    flex: 1;
    min-width: 0;
    width: 0;
}

@media (max-width: 768px) {
    .admin-layout {
        flex-direction: column;
        padding: 1rem;
        gap: 1rem;
    }

    .admin-sidebar {
        width: 100%;
    }

    .admin-sidebar-nav {
        flex-direction: row;
        overflow-x: auto;
        gap: 0.5rem;
        position: static;
    }

    .admin-sidebar-nav a {
        white-space: nowrap;
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
    }
}

/* ===== Remove Buttons (Template entries/sets) ===== */
.btn-remove-entry {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: none;
    border: 1px solid var(--color-border);
    color: var(--color-error);
    font-size: 1.1rem;
    line-height: 1;
    padding: 0.2rem 0.5rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
}

.btn-remove-entry:hover {
    background: var(--color-error-bg);
    border-color: var(--color-error);
}

.btn-remove-set {
    background: none;
    border: none;
    color: var(--color-error);
    font-size: 1rem;
    cursor: pointer;
    padding: 0.1rem 0.4rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}

.btn-remove-set:hover {
    background: var(--color-error-bg);
}

/* ===== Date Picker ===== */
.date-picker-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.date-picker-row input[type="date"] {
    flex: 1;
}

.btn-today {
    white-space: nowrap;
    padding: 0.55rem 1rem;
    font-size: 0.9rem;
    font-weight: 600;
    background: var(--color-primary-light);
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition), color var(--transition);
}

.btn-today:hover {
    background: var(--color-primary);
    color: #fff;
}

/* ===== Footer ===== */
footer {
    margin-top: auto;
    border-top: 1px solid var(--color-border);
    background: var(--color-surface);
}

.footer-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 1.25rem 1.5rem;
    text-align: center;
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        height: auto;
        padding: 0.75rem 1rem;
        gap: 0.5rem;
    }

    .nav-links {
        justify-content: center;
        gap: 0.15rem;
    }

    .nav-links a {
        padding: 0.35rem 0.5rem;
        font-size: 0.8rem;
    }

    .container { padding: 1.25rem 1rem 3rem; }
    h1 { font-size: 1.5rem; }

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

    .form-row {
        grid-template-columns: 1fr;
    }

    .type-selector {
        flex-direction: column;
    }

    .type-btn {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .login-container {
        margin: 1rem;
        padding: 1.75rem;
    }
}