/* ============================================================
   30-Day Calisthenics Challenge — styles.css
   Version: 1.0
   Theme: Dark industrial / athletic
   ============================================================ */

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

:root {
  --bg:         #0d0d0d;
  --surface:    #161616;
  --surface2:   #1f1f1f;
  --border:     #2a2a2a;
  --accent:     #e8ff47;       /* sharp lime yellow */
  --accent2:    #ff5c3a;       /* orange-red for phase 2 */
  --accent3:    #c084fc;       /* purple for phase 3 */
  --text:       #f0f0f0;
  --muted:      #7a7a7a;
  --rest-col:   #1a1a1a;

  --phase1:     #e8ff47;
  --phase2:     #ff5c3a;
  --phase3:     #c084fc;

  --font-display: 'Bebas Neue', sans-serif;
  --font-mono:    'Space Mono', monospace;
  --font-body:    'DM Sans', sans-serif;

  --radius:     10px;
  --radius-lg:  16px;
  --shadow:     0 4px 24px rgba(0,0,0,0.6);
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* --- HEADER --- */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 28px 24px 20px;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
}

.header-inner { max-width: 1100px; margin: 0 auto; }

.header-top {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.logo-block { line-height: 1; }

.logo-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--accent);
  background: rgba(232,255,71,0.1);
  border: 1px solid rgba(232,255,71,0.3);
  padding: 2px 7px;
  border-radius: 4px;
  letter-spacing: 0.1em;
  display: inline-block;
  margin-bottom: 6px;
}

.logo-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 5vw, 48px);
  letter-spacing: 0.03em;
  color: var(--text);
  line-height: 0.95;
}

.logo-sub {
  font-family: var(--font-display);
  font-size: clamp(14px, 2.5vw, 22px);
  color: var(--accent);
  letter-spacing: 0.2em;
  margin-top: 2px;
}

.header-stats {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.stat-block {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.stat-value {
  font-family: var(--font-display);
  font-size: 22px;
  color: var(--text);
  letter-spacing: 0.05em;
}

/* --- PROGRESS BAR --- */
.progress-section { margin-top: 4px; }

.progress-label {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 8px;
}

.progress-bar-track {
  height: 6px;
  background: var(--border);
  border-radius: 99px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--phase1), var(--phase2), var(--phase3));
  border-radius: 99px;
  transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.phase-markers {
  position: relative;
  height: 18px;
  margin-top: 6px;
}

.phase-marker {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 8px;
  color: var(--muted);
  transform: translateX(-0%);
  white-space: nowrap;
}

/* --- PHASE LEGEND --- */
.phase-legend {
  display: flex;
  gap: 10px;
  padding: 16px 24px;
  max-width: 1100px;
  margin: 0 auto;
  flex-wrap: wrap;
}

.phase-pill {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  padding: 5px 12px;
  border-radius: 99px;
  border: 1px solid;
  text-transform: uppercase;
}

.phase-pill.phase-1 { color: var(--phase1); border-color: rgba(232,255,71,0.3); background: rgba(232,255,71,0.06); }
.phase-pill.phase-2 { color: var(--phase2); border-color: rgba(255,92,58,0.3);  background: rgba(255,92,58,0.06); }
.phase-pill.phase-3 { color: var(--phase3); border-color: rgba(192,132,252,0.3); background: rgba(192,132,252,0.06); }

/* --- DAY GRID --- */
.day-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
  padding: 8px 24px 40px;
  max-width: 1100px;
  margin: 0 auto;
}

/* --- DAY CARD --- */
.day-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 14px;
  cursor: pointer;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
  position: relative;
  overflow: hidden;
  min-height: 130px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.day-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  height: 3px;
  width: 100%;
}

.day-card.phase-1::before { background: var(--phase1); }
.day-card.phase-2::before { background: var(--phase2); }
.day-card.phase-3::before { background: var(--phase3); }

.day-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.day-card.phase-1:hover { border-color: rgba(232,255,71,0.5); }
.day-card.phase-2:hover { border-color: rgba(255,92,58,0.5); }
.day-card.phase-3:hover { border-color: rgba(192,132,252,0.5); }

.day-card.rest-day {
  background: var(--rest-col);
  cursor: default;
  opacity: 0.6;
}

.day-card.rest-day:hover { transform: none; box-shadow: none; }

.day-card.completed {
  border-color: transparent;
}

.day-card.completed::after {
  content: '✓';
  position: absolute;
  top: 10px; right: 12px;
  font-size: 14px;
  font-weight: 700;
}

.day-card.phase-1.completed::after { color: var(--phase1); }
.day-card.phase-2.completed::after { color: var(--phase2); }
.day-card.phase-3.completed::after { color: var(--phase3); }

.day-card.phase-1.completed { background: rgba(232,255,71,0.05); border-color: rgba(232,255,71,0.2); }
.day-card.phase-2.completed { background: rgba(255,92,58,0.05);  border-color: rgba(255,92,58,0.2); }
.day-card.phase-3.completed { background: rgba(192,132,252,0.05); border-color: rgba(192,132,252,0.2); }

.card-day-num {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.card-title {
  font-family: var(--font-display);
  font-size: 20px;
  letter-spacing: 0.03em;
  line-height: 1.1;
  margin: 4px 0 6px;
  color: var(--text);
}

.card-focus {
  font-size: 11px;
  color: var(--muted);
  line-height: 1.4;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
}

.card-duration {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted);
}

.card-badge {
  font-family: var(--font-mono);
  font-size: 8px;
  padding: 2px 7px;
  border-radius: 99px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.phase-1 .card-badge { background: rgba(232,255,71,0.12); color: var(--phase1); }
.phase-2 .card-badge { background: rgba(255,92,58,0.12);  color: var(--phase2); }
.phase-3 .card-badge { background: rgba(192,132,252,0.12); color: var(--phase3); }

.rest-label {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--muted);
  letter-spacing: 0.1em;
}

/* --- MODAL --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(6px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 680px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 28px 28px 32px;
  position: relative;
  transform: translateY(20px);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.modal-overlay.open .modal {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: 16px; right: 16px;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--muted);
  width: 32px; height: 32px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 13px;
  display: flex; align-items: center; justify-content: center;
  transition: color 0.15s, border-color 0.15s;
}

.modal-close:hover { color: var(--text); border-color: var(--muted); }

.modal-phase-tag {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.modal-title {
  font-family: var(--font-display);
  font-size: clamp(28px, 5vw, 42px);
  letter-spacing: 0.03em;
  line-height: 1;
  margin-bottom: 6px;
}

.modal-focus {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 20px;
}

/* --- VIDEO --- */
.modal-video-wrap {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 24px;
  background: #000;
}

.modal-video-wrap iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* --- EXERCISES --- */
.modal-exercises {
  margin-bottom: 20px;
}

.exercises-title {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 12px;
}

.exercise-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.exercise-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  background: var(--surface2);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  font-size: 13px;
}

.ex-name { font-weight: 500; color: var(--text); }
.ex-sets {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  white-space: nowrap;
}

/* --- TIPS --- */
.modal-tips {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-bottom: 24px;
}

.tips-title {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}

.tips-text {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
}

/* --- COMPLETE BUTTON --- */
.btn-complete {
  width: 100%;
  padding: 14px;
  font-family: var(--font-display);
  font-size: 20px;
  letter-spacing: 0.1em;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: opacity 0.2s, transform 0.15s;
}

.btn-complete:hover { opacity: 0.9; transform: scale(0.99); }
.btn-complete:active { transform: scale(0.97); }

.btn-complete.phase-1 { background: var(--phase1); color: #0d0d0d; }
.btn-complete.phase-2 { background: var(--phase2); color: #fff; }
.btn-complete.phase-3 { background: var(--phase3); color: #fff; }

.btn-complete.done {
  opacity: 0.45;
  cursor: default;
  transform: none !important;
}

/* --- FOOTER --- */
.site-footer {
  text-align: center;
  padding: 24px;
  border-top: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.08em;
  line-height: 1.8;
}

.footer-note { opacity: 0.5; }

/* --- SCROLLBAR --- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; }

/* --- RESPONSIVE --- */
@media (max-width: 600px) {
  .header-top { flex-direction: column; align-items: flex-start; }
  .header-stats { gap: 16px; }
  .stat-block { align-items: flex-start; }
  .day-grid { grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 8px; padding: 8px 12px 32px; }
  .modal { padding: 20px 16px 24px; }
  .phase-legend { padding: 12px 12px; gap: 6px; }
  .site-header { padding: 18px 12px 14px; }
}