:root {
  --brand:       #1a6b3a;
  --brand-light: #e8f5ee;
  --brand-mid:   #3d9e62;
  --accent:      #f5a623;
  --accent-light:#fff8ec;
  --text:        #1a1a1a;
  --text2:       #555;
  --text3:       #888;
  --border:      #e2e8e4;
  --bg:          #f7faf8;
  --white:       #fff;
  --radius:      14px;
  --danger:      #c0392b;
  --info:        #0369a1;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'DM Sans', system-ui, sans-serif; background: var(--bg); color: var(--text); min-height: 100vh; }

/* Loading screen */
.loading-screen {
  display: flex; flex-direction: column; align-items: center;
  justify-content: center; min-height: 100vh; gap: 12px;
}
.loading-logo { font-size: 48px; }
.loading-text  { font-size: 22px; font-weight: 700; color: var(--brand); }
.loading-spinner {
  width: 28px; height: 28px; border: 3px solid var(--brand-light);
  border-top-color: var(--brand); border-radius: 50%;
  animation: spin .8s linear infinite; margin-top: 8px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Buttons */
.btn-primary   { background: var(--brand); color: #fff; border: none; border-radius: 10px; padding: 13px 24px; font-size: 15px; font-weight: 600; cursor: pointer; width: 100%; transition: opacity .15s; }
.btn-primary:hover   { opacity: .88; }
.btn-primary:disabled { opacity: .5; cursor: not-allowed; }
.btn-secondary { background: #fff; color: var(--brand); border: 1.5px solid var(--brand); border-radius: 10px; padding: 11px 22px; font-size: 14px; font-weight: 500; cursor: pointer; transition: background .15s; }
.btn-secondary:hover { background: var(--brand-light); }
.btn-video     { background: #ff0000; color: #fff; border: none; border-radius: 8px; padding: 7px 14px; font-size: 13px; font-weight: 500; cursor: pointer; }
.btn-check     { background: var(--border); color: var(--text2); border: none; border-radius: 8px; padding: 7px 14px; font-size: 13px; cursor: pointer; transition: .15s; }
.btn-check.done { background: var(--brand); color: #fff; }

/* Form elements */
.form-group    { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.form-label    { font-size: 13px; font-weight: 600; color: var(--text2); }
.form-input    { border: 1.5px solid var(--border); border-radius: 10px; padding: 12px 14px; font-size: 15px; font-family: inherit; outline: none; transition: border-color .15s; background: #fff; }
.form-input:focus { border-color: var(--brand); }
.form-error    { font-size: 12px; color: var(--danger); margin-top: 2px; }

/* Cards */
.card { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }

/* Exercise cards */
.exercise-card         { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; margin-bottom: 10px; transition: .2s; }
.exercise-card.completed { opacity: .65; border-color: var(--brand-light); }
.ex-top                { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 10px; }
.ex-icon               { font-size: 24px; flex-shrink: 0; }
.ex-name               { font-size: 15px; font-weight: 600; }
.ex-detail             { font-size: 13px; color: var(--text3); margin-top: 2px; }
.ex-tip                { font-size: 12px; color: var(--text2); margin-top: 4px; font-style: italic; }
.ex-actions            { display: flex; gap: 8px; flex-wrap: wrap; }
.coach-badge           { background: #f5f3ff; color: #534AB7; font-size: 11px; padding: 2px 8px; border-radius: 10px; font-weight: 500; }
.coach-note            { background: #e8f5ee; color: var(--brand); font-size: 12px; padding: 6px 10px; border-radius: 6px; margin-top: 6px; }

/* Auki chat widget */
#auki-widget   { position: fixed; bottom: 24px; right: 24px; z-index: 1000; font-family: inherit; }
#auki-bubble   { width: 54px; height: 54px; border-radius: 50%; background: var(--brand); display: flex; align-items: center; justify-content: center; cursor: pointer; box-shadow: 0 4px 16px rgba(26,107,58,.3); }
#auki-panel    { position: absolute; bottom: 64px; right: 0; width: 320px; max-width: 90vw; background: #fff; border-radius: 16px; border: 1px solid var(--border); box-shadow: 0 8px 32px rgba(0,0,0,.12); flex-direction: column; overflow: hidden; }
#auki-header   { background: var(--brand); color: #fff; padding: 12px 16px; display: flex; align-items: center; gap: 8px; font-weight: 600; }
#auki-messages { height: 280px; overflow-y: auto; padding: 14px; display: flex; flex-direction: column; gap: 10px; }
.auki-msg      { max-width: 85%; padding: 10px 12px; border-radius: 12px; font-size: 14px; line-height: 1.45; }
.auki-msg.user { background: var(--brand); color: #fff; align-self: flex-end; border-radius: 12px 12px 2px 12px; }
.auki-msg.assistant { background: var(--bg); color: var(--text); align-self: flex-start; border-radius: 12px 12px 12px 2px; }
#auki-input-row { display: flex; gap: 8px; padding: 12px; border-top: 1px solid var(--border); }
#auki-input    { flex: 1; border: 1.5px solid var(--border); border-radius: 8px; padding: 9px 12px; font-size: 14px; outline: none; font-family: inherit; }
#auki-input:focus { border-color: var(--brand); }
#auki-input-row button { background: var(--brand); color: #fff; border: none; border-radius: 8px; width: 36px; font-size: 16px; cursor: pointer; }

/* Messages badge */
.msg-badge { background: var(--danger); color: #fff; border-radius: 50%; width: 18px; height: 18px; font-size: 11px; display: inline-flex; align-items: center; justify-content: center; }

/* Toast notifications */
.toast {
  position: fixed; bottom: 90px; left: 50%; transform: translateX(-50%);
  background: #333; color: #fff; padding: 10px 20px; border-radius: 20px;
  font-size: 14px; z-index: 9999; opacity: 0; transition: opacity .3s;
  pointer-events: none; white-space: nowrap;
}
.toast.show { opacity: 1; }

/* Page wrapper */
.page { max-width: 480px; margin: 0 auto; padding: 0 16px 80px; }