/* ==================== FitTrack Global Styles ==================== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
:root{
  --bg:#F2F2F7;--card:#FFFFFF;--text:#000;--text2:#3C3C43;--text3:#8E8E93;
  --accent:#007AFF;--accent2:#34C759;--danger:#FF3B30;--warn:#FF9500;
  --border:rgba(0,0,0,.06);--shadow:0 2px 12px rgba(0,0,0,.08);
  --radius:16px;--radius-lg:24px;--modal-bg:rgba(0,0,0,.4);
  --safe-top:env(safe-area-inset-top,0px);--safe-bottom:env(safe-area-inset-bottom,0px);
  font-family:-apple-system,BlinkMacSystemFont,'SF Pro Display','PingFang SC',sans-serif}
html,body{height:100%;overscroll-behavior:none}
body{background:var(--bg);color:var(--text);overflow-x:hidden;padding-top:var(--safe-top);padding-bottom:var(--safe-bottom)}
::-webkit-scrollbar{display:none}

/* Header */
.header{position:sticky;top:0;z-index:10;background:rgba(242,242,247,.85);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);padding:12px 20px 8px;display:flex;align-items:center;justify-content:space-between}
.header-left{flex:1}
.header-title{font-size:28px;font-weight:700;letter-spacing:-.5px}
.header-sub{font-size:13px;color:var(--text3);margin-top:2px}
.btn-settings{width:36px;height:36px;background:rgba(0,0,0,.06);border:none;border-radius:50%;font-size:18px;cursor:pointer;display:flex;align-items:center;justify-content:center}

/* Page containers */
.page{padding:16px 20px 120px}
.page.hidden{display:none!important}

/* Cards */
.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;margin-bottom:16px}
.hero-stat{background:var(--card);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:32px 24px;text-align:center;margin-bottom:16px;cursor:pointer}
.hero-stat:active{transform:scale(.97)}
.hero-stat .label{font-size:14px;color:var(--text3);font-weight:500;text-transform:uppercase;margin-bottom:8px}
.hero-stat .value{font-size:56px;font-weight:800;letter-spacing:-2px;line-height:1}
.hero-stat .unit{font-size:18px;color:var(--text3);margin-top:4px}
.hero-stat .sub{font-size:13px;color:var(--text3);margin-top:8px}

/* Section title */
.section-title{font-size:18px;font-weight:700;margin:20px 0 10px}

/* Menu items (home page) */
.menu-item{display:flex;align-items:center;gap:14px;padding:14px 0;border-bottom:.5px solid var(--border);cursor:pointer;user-select:none}
.menu-item:last-child{border-bottom:none}
.menu-item:active{opacity:.6}
.menu-icon{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0}
.menu-text{flex:1}
.menu-text .title{font-size:16px;font-weight:600}
.menu-text .desc{font-size:13px;color:var(--text3);margin-top:3px}
.menu-arrow{font-size:18px;color:var(--text3)}
.show-more .menu-icon{background:rgba(0,122,255,.12)!important}
.show-more .title{color:var(--accent)}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;height:48px;padding:0 24px;border-radius:12px;font-size:16px;font-weight:600;border:none;cursor:pointer;user-select:none;transition:all .15s}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--accent);color:#fff}
.btn-secondary{background:rgba(0,122,255,.1);color:var(--accent)}
.btn-danger{background:rgba(255,59,48,.1);color:var(--danger)}
.btn-group{display:flex;gap:10px}

/* Bottom bar */
.bottom-bar{position:fixed;bottom:0;left:0;right:0;padding:16px 20px;padding-bottom:max(40px,calc(40px + var(--safe-bottom)));background:rgba(242,242,247,.95);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);z-index:5}

/* Workout page */
.workout-header{text-align:center;margin-bottom:24px}
.workout-title{font-size:22px;font-weight:700}
.workout-progress{font-size:15px;color:var(--text3);margin-top:4px}
.exercise-card{background:var(--card);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:32px 24px;text-align:center;position:relative;min-height:360px}
.phase-badge{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:20px;font-size:13px;font-weight:600;margin-bottom:12px}
.phase-badge.work{background:rgba(0,122,255,.12);color:var(--accent)}
.phase-badge.rest{background:rgba(255,149,0,.12);color:var(--warn)}
.phase-badge.done{background:rgba(52,199,89,.12);color:var(--accent2)}
.exercise-name{font-size:18px;color:var(--text2);font-weight:600;margin-bottom:8px}
.center-text{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);text-align:center}
.exercise-timer{font-size:56px;font-weight:800;letter-spacing:-2px;line-height:1}
.exercise-unit{font-size:18px;color:var(--text3);margin-top:4px}
.exercise-time-left{font-size:14px;color:var(--text3);margin-top:12px}

/* Completed page */
.stats-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:20px 0}
.stat-card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;text-align:center}
.stat-card .num{font-size:28px;font-weight:700;color:var(--accent);line-height:1;margin-bottom:8px}
.stat-card .label{font-size:13px;color:var(--text3)}
.completed-icon{font-size:64px;text-align:center;margin:20px 0 10px}
.completed-title{font-size:24px;font-weight:700;text-align:center;margin-bottom:20px}

/* Plan preview */
.plan-exercise{display:flex;align-items:center;gap:14px;padding:14px 0;border-bottom:.5px solid var(--border)}
.plan-exercise:last-child{border-bottom:none}
.plan-ex-number{width:32px;height:32px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;flex-shrink:0}
.plan-ex-info{flex:1}
.plan-ex-info .name{font-size:16px;font-weight:600}
.plan-ex-info .detail{font-size:13px;color:var(--text3);margin-top:3px}

/* Toast */
.toast{position:fixed;bottom:100px;left:50%;transform:translateX(-50%) translateY(20px);background:rgba(0,0,0,.75);color:#fff;padding:12px 24px;border-radius:12px;font-size:15px;font-weight:500;opacity:0;pointer-events:none;z-index:200;transition:all .3s;white-space:nowrap}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* Modal */
.modal-overlay{position:fixed;inset:0;z-index:100;background:var(--modal-bg);opacity:0;pointer-events:none;transition:opacity .3s}
.modal-overlay.show{opacity:1;pointer-events:auto}
.modal-sheet{position:absolute;bottom:0;left:0;right:0;max-height:85vh;background:var(--card);border-radius:var(--radius-lg) var(--radius-lg) 0 0;overflow-y:auto;transform:translateY(20px);transition:transform .3s;padding-bottom:var(--safe-bottom)}
.modal-overlay.show .modal-sheet{transform:translateY(0)}
.modal-handle{width:36px;height:5px;background:rgba(0,0,0,.15);border-radius:3px;margin:10px auto 0}
.modal-header{padding:14px 20px 10px;display:flex;align-items:center;justify-content:space-between;border-bottom:.5px solid var(--border);position:sticky;top:0;background:var(--card);z-index:1}
.modal-title{font-size:17px;font-weight:700}
.modal-close{font-size:24px;color:var(--accent);font-weight:300;cursor:pointer;padding:4px 8px}

/* History items */
.history-item{display:flex;align-items:center;gap:14px;padding:14px 0;border-bottom:.5px solid var(--border);cursor:pointer}
.history-item:last-child{border-bottom:none}
.history-item:active{opacity:.6}
.history-icon{width:44px;height:44px;border-radius:12px;background:var(--bg);display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0}
.history-info{flex:1}
.history-info .title{font-size:16px;font-weight:600}
.history-info .meta{font-size:13px;color:var(--text3);margin-top:3px}
.history-arrow{font-size:18px;color:var(--text3)}

/* Settings */
.settings-item{display:flex;align-items:center;gap:14px;padding:14px 0;border-bottom:.5px solid var(--border);cursor:pointer;user-select:none}
.settings-item:last-child{border-bottom:none}
.settings-item:active{opacity:.6}
.settings-item.danger .settings-title{color:#FF3B30}
.settings-item.danger .settings-desc{color:rgba(255,59,48,.6)}
.settings-icon{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0}
.settings-text{flex:1}
.settings-title{font-size:16px;font-weight:600}
.settings-desc{font-size:13px;color:var(--text3);margin-top:3px}
.settings-divider{height:8px}

/* Misc */
.hidden{display:none!important}
.mt16{margin-top:16px}
.mt24{margin-top:24px}
.text-center{text-align:center}
.empty-state{text-align:center;padding:40px 20px;color:var(--text3)}
.empty-state .icon{font-size:48px;margin-bottom:12px}
.empty-state .text{font-size:15px}
.empty-state .sub-text{font-size:13px;color:var(--text3);margin-top:6px}