/* =====================================================
   FitCoach Pro – Main Stylesheet
   ===================================================== */

:root {
    --primary: #6C63FF;
    --primary-dark: #5A54E8;
    --primary-light: #8B84FF;
    --secondary: #FF6584;
    --success: #2DD4BF;
    --warning: #F59E0B;
    --danger: #EF4444;
    --info: #3B82F6;
    --dark: #0F0F1A;
    --dark-2: #1A1A2E;
    --dark-3: #16213E;
    --dark-4: #1E1E3A;
    --card-bg: #1E1E3A;
    --card-border: rgba(108, 99, 255, 0.15);
    --text-primary: #E8E8F0;
    --text-secondary: #9090B0;
    --text-muted: #6060A0;
    --sidebar-width: 260px;
    --topbar-height: 64px;
    --border-radius: 16px;
    --border-radius-sm: 10px;
    --shadow: 0 4px 24px rgba(0,0,0,0.4);
    --shadow-card: 0 2px 16px rgba(0,0,0,0.3);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', sans-serif;
    background: var(--dark);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--dark-2); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 3px; }

/* =================== SIDEBAR =================== */
.sidebar {
    position: fixed;
    left: 0; top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--dark-2);
    border-right: 1px solid var(--card-border);
    display: flex;
    flex-direction: column;
    z-index: 1000;
    transition: var(--transition);
    overflow-y: auto;
    overflow-x: hidden;
}

.sidebar-header {
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--card-border);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--primary-light);
}
.logo i {
    font-size: 1.4rem;
    color: var(--primary);
    background: rgba(108,99,255,0.15);
    padding: 8px;
    border-radius: 10px;
}

.sidebar-toggle {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.1rem;
    padding: 6px;
    border-radius: 6px;
    display: none;
}

.user-card {
    margin: 16px;
    padding: 14px;
    background: var(--dark-4);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--card-border);
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.user-info { display: flex; flex-direction: column; gap: 2px; overflow: hidden; }
.user-name { font-weight: 600; font-size: 0.9rem; color: var(--text-primary); }
.user-stats { font-size: 0.72rem; color: var(--text-secondary); }

.sidebar-nav { flex: 1; padding: 8px 0; }

.sidebar-nav ul { list-style: none; }

.nav-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 20px;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 0.88rem;
    font-weight: 500;
    border-radius: 0;
    transition: var(--transition);
    position: relative;
    margin: 2px 0;
}

.nav-item:hover {
    color: var(--text-primary);
    background: rgba(108,99,255,0.08);
}

.nav-item.active {
    color: var(--primary-light);
    background: rgba(108,99,255,0.12);
}
.nav-item.active::before {
    content: '';
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 3px;
    background: var(--primary);
    border-radius: 0 2px 2px 0;
}

.nav-item i {
    width: 20px;
    font-size: 1rem;
    text-align: center;
    flex-shrink: 0;
}

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--card-border);
}

.next-session {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: rgba(108,99,255,0.1);
    border-radius: var(--border-radius-sm);
    border: 1px solid rgba(108,99,255,0.2);
}
.next-session i { color: var(--primary); font-size: 1.1rem; }
.next-session .label { display: block; font-size: 0.7rem; color: var(--text-secondary); }
.next-session .value { display: block; font-size: 0.82rem; font-weight: 600; color: var(--text-primary); }

/* =================== MAIN CONTENT =================== */
.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    transition: var(--transition);
    padding-bottom: 40px;
}

/* =================== TOPBAR =================== */
.topbar {
    position: sticky; top: 0; z-index: 100;
    height: var(--topbar-height);
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--card-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
}

.topbar-left { display: flex; align-items: center; gap: 16px; }
.topbar-right { display: flex; align-items: center; gap: 12px; }

.menu-btn {
    background: none; border: none;
    color: var(--text-secondary);
    cursor: pointer; font-size: 1.2rem;
    padding: 8px; border-radius: 8px;
    display: none;
}

.page-title {
    font-family: 'Poppins', sans-serif;
    font-weight: 700; font-size: 1.1rem;
    color: var(--text-primary);
}

.week-badge, .streak-badge {
    display: flex; align-items: center; gap: 6px;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.8rem; font-weight: 600;
}

.week-badge {
    background: rgba(108,99,255,0.15);
    color: var(--primary-light);
    border: 1px solid rgba(108,99,255,0.25);
}

.streak-badge {
    background: rgba(245,158,11,0.15);
    color: var(--warning);
    border: 1px solid rgba(245,158,11,0.25);
}

.chat-btn {
    position: relative;
    width: 40px; height: 40px;
    border-radius: 50%;
    border: none;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    cursor: pointer; font-size: 1rem;
    display: flex; align-items: center; justify-content: center;
    transition: var(--transition);
    box-shadow: 0 2px 12px rgba(108,99,255,0.4);
}
.chat-btn:hover { transform: scale(1.1); box-shadow: 0 4px 20px rgba(108,99,255,0.6); }

.chat-notif {
    position: absolute; top: -4px; right: -4px;
    width: 18px; height: 18px;
    background: var(--danger);
    border-radius: 50%;
    font-size: 0.65rem; font-weight: 700;
    display: flex; align-items: center; justify-content: center;
}

/* =================== PAGES =================== */
.page { display: none; padding: 24px; }
.page.active { display: block; animation: fadeIn 0.3s ease; }

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

.page-header { margin-bottom: 28px; }
.page-header h1 {
    font-family: 'Poppins', sans-serif;
    font-weight: 700; font-size: 1.8rem;
    background: linear-gradient(135deg, var(--text-primary), var(--primary-light));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    margin-bottom: 6px;
}
.page-subtitle { color: var(--text-secondary); font-size: 0.9rem; }

/* =================== STATS GRID =================== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: var(--transition);
    cursor: default;
}
.stat-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-card); }

.stat-icon {
    width: 52px; height: 52px;
    border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.stat-card.primary .stat-icon { background: rgba(108,99,255,0.2); color: var(--primary-light); }
.stat-card.success .stat-icon { background: rgba(45,212,191,0.2); color: var(--success); }
.stat-card.warning .stat-icon { background: rgba(245,158,11,0.2); color: var(--warning); }
.stat-card.info .stat-icon { background: rgba(59,130,246,0.2); color: var(--info); }

.stat-value {
    font-family: 'Poppins', sans-serif;
    font-weight: 700; font-size: 1.6rem;
    color: var(--text-primary);
}
.stat-label { font-size: 0.78rem; color: var(--text-secondary); margin-top: 2px; }

/* =================== CARDS =================== */
.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition);
}
.card:hover { box-shadow: var(--shadow-card); }

.card-header {
    padding: 18px 20px 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid rgba(108,99,255,0.08);
}
.card-header h3 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex; align-items: center; gap: 8px;
}
.card-header h3 i { color: var(--primary); }

.card-body { padding: 16px 20px; }
.card-footer {
    padding: 14px 20px;
    border-top: 1px solid rgba(108,99,255,0.08);
    display: flex; gap: 10px; flex-wrap: wrap;
}

/* =================== DASHBOARD GRID =================== */
.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.dashboard-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 20px;
}

/* =================== WEEKLY DAYS =================== */
.weekly-days {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.day-chip {
    flex: 1; min-width: 36px;
    padding: 10px 6px;
    border-radius: 10px;
    text-align: center;
    font-size: 0.72rem; font-weight: 600;
    border: 1px solid;
    transition: var(--transition);
}
.day-chip.rest { background: rgba(255,255,255,0.04); border-color: rgba(255,255,255,0.08); color: var(--text-muted); }
.day-chip.workout-day { background: rgba(108,99,255,0.15); border-color: rgba(108,99,255,0.3); color: var(--primary-light); }
.day-chip.completed { background: rgba(45,212,191,0.2); border-color: rgba(45,212,191,0.4); color: var(--success); }
.day-chip.today { border-color: var(--warning); background: rgba(245,158,11,0.1); }
.day-chip .day-name { display: block; margin-bottom: 4px; }
.day-chip .day-icon { font-size: 0.9rem; }

/* =================== BUTTONS =================== */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 10px 20px;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 600;
    font-family: 'Inter', sans-serif;
    transition: var(--transition);
    text-decoration: none;
}
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 4px 16px rgba(108,99,255,0.4); }
.btn-success { background: linear-gradient(135deg, var(--success), #1FB5A3); color: #fff; }
.btn-success:hover { transform: translateY(-2px); box-shadow: 0 4px 16px rgba(45,212,191,0.4); }
.btn-warning { background: linear-gradient(135deg, var(--warning), #D97706); color: #fff; }
.btn-outline { background: transparent; border: 1px solid var(--card-border); color: var(--text-secondary); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary-light); }
.btn-sm { padding: 6px 14px; font-size: 0.8rem; }
.btn-lg { padding: 14px 28px; font-size: 1rem; border-radius: 12px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none !important; }

/* =================== TAG =================== */
.tag {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    background: rgba(108,99,255,0.2);
    color: var(--primary-light);
}
.tag-success { background: rgba(45,212,191,0.2); color: var(--success); }
.tag-warning { background: rgba(245,158,11,0.2); color: var(--warning); }
.tag-rest { background: rgba(255,255,255,0.06); color: var(--text-muted); }

/* =================== ALERTS =================== */
.alert {
    display: flex; align-items: flex-start; gap: 12px;
    padding: 12px 16px;
    border-radius: 10px;
    font-size: 0.84rem;
}
.alert-warning { background: rgba(245,158,11,0.1); border: 1px solid rgba(245,158,11,0.25); color: var(--warning); }
.alert-warning i { margin-top: 2px; flex-shrink: 0; }
.alert-warning strong { display: block; margin-bottom: 2px; color: var(--text-primary); }
.alert-warning p { color: var(--text-secondary); font-size: 0.8rem; margin: 0; }
.alert-info { background: rgba(59,130,246,0.1); border: 1px solid rgba(59,130,246,0.25); color: var(--info); }
.alert-success { background: rgba(45,212,191,0.1); border: 1px solid rgba(45,212,191,0.25); color: var(--success); }

/* =================== EXERCISE CARDS =================== */
.exercise-list { display: flex; flex-direction: column; gap: 12px; }

.exercise-card {
    background: var(--dark-4);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    transition: var(--transition);
}
.exercise-card:hover { border-color: rgba(108,99,255,0.3); }

.exercise-header {
    padding: 14px 16px;
    display: flex; align-items: center; gap: 14px;
    cursor: pointer;
}

.exercise-num {
    width: 32px; height: 32px;
    border-radius: 50%;
    background: rgba(108,99,255,0.2);
    color: var(--primary-light);
    display: flex; align-items: center; justify-content: center;
    font-size: 0.85rem; font-weight: 700;
    flex-shrink: 0;
}

.exercise-info { flex: 1; }
.exercise-name { font-weight: 600; font-size: 0.92rem; color: var(--text-primary); }
.exercise-meta { font-size: 0.78rem; color: var(--text-secondary); margin-top: 2px; }

.exercise-badges { display: flex; gap: 6px; flex-wrap: wrap; }
.muscle-tag {
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.68rem; font-weight: 600;
    background: rgba(59,130,246,0.15); color: var(--info);
}
.intensity-tag {
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.68rem; font-weight: 600;
}
.intensity-low { background: rgba(45,212,191,0.15); color: var(--success); }
.intensity-medium { background: rgba(245,158,11,0.15); color: var(--warning); }
.intensity-high { background: rgba(239,68,68,0.15); color: var(--danger); }

.exercise-expand {
    color: var(--text-muted);
    font-size: 0.85rem;
    transition: var(--transition);
}
.exercise-card.expanded .exercise-expand { transform: rotate(180deg); }

.exercise-details {
    padding: 0 16px 16px;
    display: none;
    border-top: 1px solid rgba(108,99,255,0.08);
    padding-top: 14px;
}
.exercise-card.expanded .exercise-details { display: block; }

.exercise-tips {
    font-size: 0.82rem; color: var(--text-secondary);
    line-height: 1.6;
    background: rgba(108,99,255,0.06);
    padding: 10px 12px;
    border-radius: 8px;
    border-left: 3px solid var(--primary);
    margin-top: 10px;
}

.sets-tracker {
    display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px;
}

.set-btn {
    width: 48px; height: 48px;
    border-radius: 10px;
    border: 1px solid var(--card-border);
    background: var(--dark-3);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.78rem; font-weight: 600;
    transition: var(--transition);
    display: flex; flex-direction: column;
    align-items: center; justify-content: center; gap: 1px;
}
.set-btn:hover { border-color: var(--primary); color: var(--primary-light); }
.set-btn.done { background: rgba(45,212,191,0.2); border-color: var(--success); color: var(--success); }

/* =================== PROGRAM TABLE =================== */
.program-phases { display: flex; flex-direction: column; gap: 24px; }

.phase-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.phase-header {
    padding: 18px 24px;
    background: linear-gradient(135deg, rgba(108,99,255,0.15), rgba(108,99,255,0.05));
    border-bottom: 1px solid var(--card-border);
    display: flex; align-items: center; justify-content: space-between;
}

.phase-title {
    font-family: 'Poppins', sans-serif;
    font-weight: 700; font-size: 1.05rem;
    color: var(--text-primary);
}

.phase-weeks {
    font-size: 0.8rem; color: var(--text-secondary);
    margin-top: 2px;
}

.weeks-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
    padding: 20px;
}

.week-card {
    background: var(--dark-4);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius-sm);
    padding: 16px;
    transition: var(--transition);
    cursor: pointer;
}
.week-card:hover { border-color: var(--primary); transform: translateY(-2px); }
.week-card.current { border-color: var(--primary); background: rgba(108,99,255,0.1); }
.week-card.completed-week { border-color: var(--success); background: rgba(45,212,191,0.07); }

.week-number { font-size: 0.75rem; color: var(--text-muted); font-weight: 600; }
.week-focus { font-weight: 600; font-size: 0.9rem; color: var(--text-primary); margin: 4px 0; }
.week-desc { font-size: 0.78rem; color: var(--text-secondary); line-height: 1.5; }

/* =================== TRACKER =================== */
.tracker-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 0.82rem; font-weight: 600; color: var(--text-secondary); margin-bottom: 6px; }
.form-control {
    width: 100%;
    padding: 10px 14px;
    background: var(--dark-3);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.88rem;
    font-family: 'Inter', sans-serif;
    transition: var(--transition);
    outline: none;
}
.form-control:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(108,99,255,0.15); }
.form-control::placeholder { color: var(--text-muted); }

.form-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }

.history-list { display: flex; flex-direction: column; gap: 8px; }

.history-item {
    display: flex; align-items: center; justify-content: space-between;
    padding: 12px 16px;
    background: var(--dark-4);
    border: 1px solid var(--card-border);
    border-radius: 10px;
    font-size: 0.85rem;
}
.history-item .date { color: var(--text-muted); font-size: 0.78rem; }
.history-item .value { font-weight: 700; color: var(--primary-light); font-size: 1rem; }
.history-item .delta-up { color: var(--success); font-size: 0.8rem; }
.history-item .delta-down { color: var(--danger); font-size: 0.8rem; }

/* =================== BADGES =================== */
.badges-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 16px;
}

.badge-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius);
    padding: 24px 16px;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.badge-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card); }

.badge-card.unlocked { border-color: rgba(245,158,11,0.4); }
.badge-card.unlocked::before {
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(245,158,11,0.08), transparent);
}

.badge-card.locked { opacity: 0.5; filter: grayscale(0.8); }

.badge-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
    display: block;
}

.badge-name { font-weight: 700; font-size: 0.9rem; color: var(--text-primary); }
.badge-desc { font-size: 0.75rem; color: var(--text-secondary); margin-top: 6px; line-height: 1.4; }

.badge-unlocked-label {
    display: inline-block;
    margin-top: 10px;
    padding: 3px 10px;
    background: rgba(245,158,11,0.2);
    color: var(--warning);
    border-radius: 12px;
    font-size: 0.72rem; font-weight: 600;
}

/* =================== NUTRITION =================== */
.nutrition-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 20px; }

.macro-bar { margin-bottom: 14px; }
.macro-label { display: flex; justify-content: space-between; font-size: 0.82rem; margin-bottom: 6px; }
.macro-name { color: var(--text-secondary); }
.macro-val { font-weight: 600; color: var(--text-primary); }
.progress-bar { height: 8px; background: var(--dark-3); border-radius: 4px; overflow: hidden; }
.progress-fill { height: 100%; border-radius: 4px; transition: width 0.8s ease; }
.fill-protein { background: linear-gradient(90deg, var(--primary), var(--primary-light)); }
.fill-carbs { background: linear-gradient(90deg, var(--warning), #F97316); }
.fill-fat { background: linear-gradient(90deg, var(--success), #10B981); }

.meal-plan { display: flex; flex-direction: column; gap: 10px; }
.meal-item {
    display: flex; align-items: flex-start; gap: 12px;
    padding: 12px 16px;
    background: var(--dark-4);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--card-border);
}
.meal-time { 
    font-size: 0.72rem; font-weight: 700;
    color: var(--primary-light);
    min-width: 60px;
}
.meal-content { flex: 1; font-size: 0.84rem; color: var(--text-primary); line-height: 1.5; }
.meal-kcal { font-size: 0.78rem; color: var(--text-muted); font-weight: 600; }

/* =================== CHATBOT =================== */
.chatbot-container {
    position: fixed;
    right: 24px; bottom: 24px;
    width: 380px; height: 580px;
    background: var(--dark-2);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    display: flex; flex-direction: column;
    z-index: 2000;
    box-shadow: 0 12px 50px rgba(0,0,0,0.6);
    transform: translateY(20px) scale(0.95);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.chatbot-container.open {
    transform: translateY(0) scale(1);
    opacity: 1;
    pointer-events: all;
}

.chatbot-header {
    padding: 16px 18px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 20px 20px 0 0;
    display: flex; align-items: center; justify-content: space-between;
}

.chatbot-title { display: flex; align-items: center; gap: 12px; }

.bot-avatar {
    width: 38px; height: 38px;
    border-radius: 50%;
    background: rgba(255,255,255,0.15);
    display: flex; align-items: center; justify-content: center;
    font-size: 1rem;
}

.bot-name { display: block; font-weight: 700; font-size: 0.9rem; color: #fff; }
.bot-status { display: flex; align-items: center; gap: 6px; font-size: 0.72rem; color: rgba(255,255,255,0.7); }

.status-dot {
    width: 7px; height: 7px;
    border-radius: 50%;
    background: #4ade80;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.chatbot-actions { display: flex; gap: 8px; }
.chat-action-btn {
    background: rgba(255,255,255,0.15); border: none;
    color: #fff; cursor: pointer;
    width: 30px; height: 30px;
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.8rem;
    transition: var(--transition);
}
.chat-action-btn:hover { background: rgba(255,255,255,0.3); }

.chatbot-messages {
    flex: 1; overflow-y: auto;
    padding: 16px;
    display: flex; flex-direction: column; gap: 12px;
}

.chat-message {
    display: flex; gap: 10px; align-items: flex-start;
    animation: messageIn 0.3s ease;
}

@keyframes messageIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.chat-message.user { flex-direction: row-reverse; }

.msg-avatar {
    width: 32px; height: 32px;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.85rem; flex-shrink: 0;
}
.bot-msg-avatar { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); }
.user-msg-avatar { background: linear-gradient(135deg, var(--success), #0D9488); }

.msg-bubble {
    max-width: 75%;
    padding: 10px 14px;
    border-radius: 16px;
    font-size: 0.84rem;
    line-height: 1.6;
}
.bot-bubble {
    background: var(--dark-4);
    border: 1px solid var(--card-border);
    color: var(--text-primary);
    border-top-left-radius: 4px;
}
.user-bubble {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    border-top-right-radius: 4px;
}

.msg-time { font-size: 0.65rem; color: var(--text-muted); margin-top: 4px; display: block; }

.chat-typing {
    display: flex; gap: 4px; padding: 12px 14px;
    background: var(--dark-4);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    width: fit-content;
    max-width: 75%;
}
.typing-dot {
    width: 7px; height: 7px; border-radius: 50%;
    background: var(--text-muted);
    animation: typingAnim 1.2s infinite;
}
.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }
@keyframes typingAnim {
    0%, 80%, 100% { transform: scale(0.7); opacity: 0.4; }
    40% { transform: scale(1); opacity: 1; }
}

.chat-suggestions {
    padding: 0 16px 8px;
    display: flex; gap: 6px; flex-wrap: wrap;
}
.suggestion-chip {
    padding: 5px 12px;
    background: rgba(108,99,255,0.12);
    border: 1px solid rgba(108,99,255,0.25);
    border-radius: 16px;
    font-size: 0.75rem;
    color: var(--primary-light);
    cursor: pointer;
    transition: var(--transition);
}
.suggestion-chip:hover { background: rgba(108,99,255,0.25); }

.chatbot-input-area {
    padding: 12px 16px;
    border-top: 1px solid var(--card-border);
    display: flex; gap: 10px; align-items: flex-end;
}

#chatInput {
    flex: 1;
    padding: 10px 14px;
    background: var(--dark-4);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 0.85rem;
    font-family: 'Inter', sans-serif;
    resize: none;
    outline: none;
    line-height: 1.4;
    max-height: 120px;
    transition: var(--transition);
}
#chatInput:focus { border-color: var(--primary); }
#chatInput::placeholder { color: var(--text-muted); }

.chat-send-btn {
    width: 40px; height: 40px;
    border-radius: 12px;
    border: none;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    cursor: pointer; font-size: 0.9rem;
    display: flex; align-items: center; justify-content: center;
    transition: var(--transition);
    flex-shrink: 0;
}
.chat-send-btn:hover { transform: scale(1.05); }

/* =================== MODAL =================== */
.modal {
    position: fixed; inset: 0;
    z-index: 3000;
    display: flex; align-items: center; justify-content: center;
    padding: 20px;
    visibility: hidden; opacity: 0;
    transition: var(--transition);
}
.modal.open { visibility: visible; opacity: 1; }

.modal-content {
    background: var(--dark-2);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    max-width: 600px; width: 100%;
    max-height: 85vh; overflow-y: auto;
    transform: scale(0.95);
    transition: var(--transition);
    box-shadow: 0 20px 60px rgba(0,0,0,0.7);
}
.modal.open .modal-content { transform: scale(1); }

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--card-border);
    display: flex; align-items: center; justify-content: space-between;
}
.modal-header h3 { font-family: 'Poppins', sans-serif; font-weight: 700; font-size: 1.1rem; }
.modal-close { background: none; border: none; color: var(--text-secondary); cursor: pointer; font-size: 1.1rem; }
.modal-body { padding: 24px; }
.modal-footer { padding: 16px 24px; border-top: 1px solid var(--card-border); }

/* =================== OVERLAY =================== */
.overlay {
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.7);
    z-index: 2500;
    display: none;
}
.overlay.active { display: block; }

/* =================== TOAST =================== */
.toast {
    position: fixed; bottom: 90px; right: 24px;
    background: var(--dark-4);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 14px 20px;
    display: flex; align-items: center; gap: 10px;
    font-size: 0.85rem; font-weight: 500;
    box-shadow: var(--shadow);
    z-index: 9999;
    transform: translateX(200%);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.toast.show { transform: translateX(0); }
.toast-icon { font-size: 1.1rem; color: var(--success); }
.toast.error .toast-icon { color: var(--danger); }
.toast.warning .toast-icon { color: var(--warning); }

/* =================== PROFILE =================== */
.profile-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 24px; }

.profile-summary {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius);
    padding: 28px;
    text-align: center;
}

.profile-avatar-large {
    width: 90px; height: 90px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: flex; align-items: center; justify-content: center;
    font-size: 2.5rem;
    margin: 0 auto 16px;
}

.imc-display {
    padding: 12px 20px;
    background: rgba(45,212,191,0.1);
    border: 1px solid rgba(45,212,191,0.2);
    border-radius: 10px;
    margin: 16px 0;
}
.imc-value { font-size: 1.8rem; font-weight: 800; color: var(--success); }
.imc-label { font-size: 0.78rem; color: var(--text-secondary); }
.imc-status { font-size: 0.82rem; font-weight: 600; color: var(--success); }

/* =================== LOADING =================== */
.loading-state {
    text-align: center;
    padding: 30px;
    color: var(--text-muted);
}
.loading-state i { font-size: 1.5rem; margin-bottom: 8px; display: block; }

/* =================== TIPS =================== */
.tip-content {
    background: rgba(108,99,255,0.08);
    border-left: 3px solid var(--primary);
    border-radius: 0 8px 8px 0;
    padding: 12px 14px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* =================== WORKOUT SESSION =================== */
.session-timer {
    font-family: 'Poppins', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    color: var(--primary-light);
    margin: 16px 0;
}

.session-progress {
    margin: 16px 0;
}
.session-progress-bar {
    height: 10px;
    background: var(--dark-3);
    border-radius: 5px;
    overflow: hidden;
    margin-top: 8px;
}
.session-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--success));
    border-radius: 5px;
    transition: width 0.5s ease;
}

.rest-timer {
    text-align: center;
    padding: 20px;
    background: rgba(108,99,255,0.1);
    border-radius: 12px;
    margin: 12px 0;
}
.rest-timer .countdown {
    font-size: 3rem; font-weight: 800;
    color: var(--warning); font-family: 'Poppins', sans-serif;
}
.rest-timer p { color: var(--text-secondary); font-size: 0.88rem; }

/* =================== RESPONSIVE =================== */
@media (max-width: 1200px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .dashboard-grid-3 { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 992px) {
    :root { --sidebar-width: 0px; }
    .sidebar {
        transform: translateX(-260px);
        width: 260px;
        box-shadow: var(--shadow);
    }
    .sidebar.open { transform: translateX(0); }
    .main-content { margin-left: 0; }
    .menu-btn { display: flex; }
    .overlay { z-index: 999; }
    .sidebar-toggle { display: flex; }
    .dashboard-grid { grid-template-columns: 1fr; }
    .tracker-grid { grid-template-columns: 1fr; }
    .nutrition-grid { grid-template-columns: 1fr; }
    .profile-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .dashboard-grid-3 { grid-template-columns: 1fr; }
    .chatbot-container { width: calc(100vw - 24px); right: 12px; }
    .page { padding: 16px; }
    .form-grid { grid-template-columns: 1fr 1fr; }
    .badges-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
    .chatbot-container { width: calc(100vw - 16px); right: 8px; bottom: 8px; height: 70vh; }
    .form-grid { grid-template-columns: 1fr; }
    .topbar { padding: 0 16px; }
    .week-badge { display: none; }
}

/* =================== EXTRA POLISH =================== */
.card:hover { border-color: rgba(108,99,255,0.25); }

.page-header h1 i { font-size: 1.4rem; }

/* Animated gradient border on active elements */
.stat-card.primary { border-color: rgba(108,99,255,0.25); }
.stat-card.success { border-color: rgba(45,212,191,0.2); }
.stat-card.warning { border-color: rgba(245,158,11,0.2); }
.stat-card.info { border-color: rgba(59,130,246,0.2); }

/* Pulse animation for chat button */
@keyframes chatPulse {
    0% { box-shadow: 0 2px 12px rgba(108,99,255,0.4); }
    50% { box-shadow: 0 2px 20px rgba(108,99,255,0.7); }
    100% { box-shadow: 0 2px 12px rgba(108,99,255,0.4); }
}
.chat-btn { animation: chatPulse 3s ease infinite; }

/* Gradient text for stats */
.stat-value { 
    background: linear-gradient(135deg, var(--text-primary), var(--primary-light));
    -webkit-background-clip: text; 
    -webkit-text-fill-color: transparent;
}

/* Better scrollbar for chatbot */
.chatbot-messages::-webkit-scrollbar { width: 4px; }
.chatbot-messages::-webkit-scrollbar-thumb { background: rgba(108,99,255,0.4); }

/* Phase card hover */
.week-card:hover .week-focus { color: var(--primary-light); }

/* Smooth transitions for all interactive elements */
button { transition: all 0.2s ease; }

/* Better alert spacing */
.alert + .alert { margin-top: 8px; }

/* Empty state */
.empty-state {
    text-align: center; 
    padding: 40px 20px;
    color: var(--text-muted);
}
.empty-state i { 
    font-size: 2.5rem; 
    display: block; 
    margin-bottom: 12px; 
    opacity: 0.5;
}
.empty-state p { font-size: 0.88rem; line-height: 1.6; }

/* Nutrition mobile fix */
@media (max-width: 768px) {
    .nutrition-grid { grid-template-columns: 1fr; }
    [style*="grid-template-columns: repeat(4,1fr)"] { 
        display: grid !important; 
        grid-template-columns: repeat(2,1fr) !important; 
    }
}