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

:root {
  --green:       #00ff41;
  --green-dim:   rgba(0,255,65,0.5);
  --green-faint: rgba(0,255,65,0.12);
  --cyan:        #00d4ff;
  --red:         #ff3c3c;
  --amber:       #ffc800;
  --purple:      #a050ff;
  --pink:        #ff0080;
  --orange:      #ff8c00;
  --bg:          #000;
  --bg2:         rgba(0,0,0,0.85);
  --border:      rgba(0,255,65,0.18);
  --radius:      10px;
  --radius-lg:   14px;
  --font-mono:   'Share Tech Mono', 'Courier New', Courier, monospace;
  --font-title:  'Orbitron', 'Arial Black', sans-serif;
}

body {
  background: var(--bg);
  color: var(--green);
  font-family: var(--font-mono);
  min-height: 100vh;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
input, select, textarea, button { font-family: inherit; }

/* ── MATRIX CANVAS ───────────────────────────────────────── */
#matrix-canvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.09;
}

/* ── NAVBAR ──────────────────────────────────────────────── */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(0,0,0,0.97);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(10px);
}

.nav-inner {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 24px;
  height: 62px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  text-decoration: none;
}

.nav-logo-text {
  font-family: var(--font-title);
  font-size: 18px;
  font-weight: 900;
  letter-spacing: 3px;
  color: var(--green);
  text-shadow: 0 0 18px rgba(0,255,65,0.45);
}

.nav-logo-sub {
  font-size: 8px;
  letter-spacing: 2px;
  color: rgba(0,255,65,0.35);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}

.nav-link {
  font-size: 11px;
  letter-spacing: 2px;
  padding: 6px 14px;
  border-radius: 6px;
  color: rgba(0,255,65,0.6);
  transition: all 0.2s;
  border: 1px solid transparent;
  text-decoration: none;
}

.nav-link:hover,
.nav-link.active {
  color: var(--green);
  background: rgba(0,255,65,0.07);
  border-color: var(--border);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}

.secuneus-badge {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 6px 12px;
  border-radius: 8px;
  background: rgba(0,212,255,0.06);
  border: 1px solid rgba(0,212,255,0.2);
}

.secuneus-name {
  font-family: var(--font-title);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--cyan);
  text-shadow: 0 0 10px rgba(0,212,255,0.4);
}

.nav-score {
  font-family: var(--font-title);
  font-size: 11px;
  font-weight: 700;
  color: var(--green);
  padding: 6px 12px;
  border-radius: 6px;
  background: rgba(0,255,65,0.07);
  border: 1px solid var(--border);
}

.btn-login {
  font-size: 11px;
  letter-spacing: 2px;
  padding: 7px 16px;
  border-radius: 7px;
  border: 1px solid rgba(0,255,65,0.35);
  color: var(--green);
  transition: all 0.2s;
  text-decoration: none;
  display: inline-block;
}
.btn-login:hover { background: rgba(0,255,65,0.08); }

.btn-register {
  font-size: 11px;
  letter-spacing: 2px;
  padding: 7px 16px;
  border-radius: 7px;
  background: rgba(0,255,65,0.14);
  border: 1px solid rgba(0,255,65,0.45);
  color: var(--green);
  transition: all 0.2s;
  text-decoration: none;
  display: inline-block;
}
.btn-register:hover { background: rgba(0,255,65,0.22); }

.btn-logout {
  font-size: 11px;
  letter-spacing: 2px;
  padding: 7px 16px;
  border-radius: 7px;
  border: 1px solid rgba(255,60,60,0.3);
  color: var(--red);
  transition: all 0.2s;
  text-decoration: none;
  display: inline-block;
}
.btn-logout:hover { background: rgba(255,60,60,0.08); }

/* ── PAGE WRAP ───────────────────────────────────────────── */
.page-wrap {
  position: relative;
  z-index: 1;
  min-height: calc(100vh - 62px);
}

.container {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── HERO ────────────────────────────────────────────────── */
.hero {
  position: relative;
  overflow: hidden;
  background: #000;
  border-bottom: 1px solid rgba(0,255,65,0.12);
}

#particle-canvas {
  display: block;
  width: 100%;
  height: auto;
}

.hero-pills {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  display: flex;
  justify-content: center;
  gap: 10px;
  padding: 12px;
  background: linear-gradient(to top, rgba(0,0,0,0.9), transparent);
  flex-wrap: wrap;
}

.hero-pill {
  font-size: 9px;
  letter-spacing: 2px;
  color: rgba(0,255,65,0.55);
  border: 1px solid rgba(0,255,65,0.22);
  border-radius: 20px;
  padding: 4px 14px;
}

/* ── STATS BAR ───────────────────────────────────────────── */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  padding: 24px 0;
}

.stat-card {
  background: rgba(0,255,65,0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 2px;
  background: linear-gradient(90deg, transparent, var(--green), transparent);
  animation: scan-line 3s linear infinite;
}

@keyframes scan-line {
  0%   { left: -100%; }
  100% { left: 100%; }
}

.stat-num {
  font-family: var(--font-title);
  font-size: 30px;
  font-weight: 700;
  color: var(--green);
}

.stat-label {
  font-size: 9px;
  letter-spacing: 2px;
  color: rgba(0,255,65,0.35);
  margin-top: 4px;
}

/* ── SECTION TITLE ───────────────────────────────────────── */
.section-title {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 10px 0 20px;
  font-family: var(--font-title);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 3px;
  color: rgba(0,255,65,0.7);
}
.section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: rgba(0,255,65,0.12);
}

/* ── CHALLENGE GRID ──────────────────────────────────────── */
.challenges-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 16px;
  padding-bottom: 48px;
}

/* ── CHALLENGE CARD ──────────────────────────────────────── */
.challenge-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px;
  text-decoration: none;
  display: block;
  position: relative;
  overflow: hidden;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  color: var(--green);
}

.challenge-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0,255,65,0.5);
  box-shadow: 0 10px 36px rgba(0,255,65,0.08);
}

.challenge-card.solved {
  border-color: rgba(0,255,65,0.4);
  background: rgba(0,255,65,0.04);
}

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.cat-badge {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 2px;
  padding: 4px 10px;
  border-radius: 5px;
}

.diff-dots { display: flex; gap: 4px; }

.diff-dot {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: rgba(0,255,65,0.15);
}
.diff-dot.on {
  background: var(--green);
  box-shadow: 0 0 6px rgba(0,255,65,0.7);
}

.card-name {
  font-family: var(--font-title);
  font-size: 17px;
  font-weight: 700;
  color: #e0ffe0;
  margin-bottom: 4px;
  letter-spacing: 1px;
}

.card-full-name {
  font-size: 11px;
  color: rgba(0,255,65,0.35);
  margin-bottom: 10px;
}

.card-desc {
  font-size: 12px;
  color: rgba(0,255,65,0.45);
  line-height: 1.65;
  margin-bottom: 16px;
}

.card-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-points {
  font-family: var(--font-title);
  font-size: 22px;
  font-weight: 700;
  color: var(--green);
}
.card-points small {
  font-size: 10px;
  color: rgba(0,255,65,0.4);
  margin-left: 3px;
}

.card-status { font-size: 10px; letter-spacing: 1px; color: rgba(0,255,65,0.3); }
.card-status.solved-tag { color: var(--green); }

.card-corner-tag {
  position: absolute;
  top: 0; right: 0;
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 4px 12px;
  border-radius: 0 14px 0 8px;
  background: rgba(0,255,65,0.85);
  color: #000;
}

/* ── CHALLENGE DETAIL ────────────────────────────────────── */
.detail-wrap { padding: 36px 0 60px; }

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  letter-spacing: 2px;
  color: rgba(0,255,65,0.45);
  margin-bottom: 24px;
  transition: color 0.2s;
  text-decoration: none;
}
.back-link:hover { color: var(--green); }

.detail-header {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 20px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
}

.detail-title {
  font-family: var(--font-title);
  font-size: 36px;
  font-weight: 900;
  color: var(--green);
  text-shadow: 0 0 30px rgba(0,255,65,0.35);
  margin: 8px 0 4px;
}

.detail-subtitle { font-size: 14px; color: rgba(0,255,65,0.45); }
.detail-pts-box { text-align: right; }

.detail-pts {
  font-family: var(--font-title);
  font-size: 48px;
  font-weight: 900;
  color: var(--green);
  line-height: 1;
}
.detail-pts-label {
  font-size: 10px;
  letter-spacing: 2px;
  color: rgba(0,255,65,0.4);
}

.pwnable-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 10px;
  letter-spacing: 2px;
  padding: 6px 14px;
  border-radius: 6px;
  border: 1px solid rgba(0,212,255,0.3);
  color: var(--cyan);
  margin-top: 10px;
  transition: all 0.2s;
  text-decoration: none;
}
.pwnable-link:hover { background: rgba(0,212,255,0.08); }

/* ── DETAIL GRID ─────────────────────────────────────────── */
.detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
@media (max-width: 900px) {
  .detail-grid { grid-template-columns: 1fr; }
}

/* ── PANEL ───────────────────────────────────────────────── */
.panel {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.panel-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-title);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
}

.panel-header.green  { background: rgba(0,255,65,0.05);  color: var(--green); }
.panel-header.cyan   { background: rgba(0,212,255,0.06); color: var(--cyan);  border-color: rgba(0,212,255,0.2); }
.panel-header.amber  { background: rgba(255,200,0,0.06); color: var(--amber); border-color: rgba(255,200,0,0.2); }

.panel-dot { width: 8px; height: 8px; border-radius: 50%; }
.panel-body { padding: 20px; }

/* ── TERMINAL BLOCK ──────────────────────────────────────── */
.terminal-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: rgba(0,20,0,0.6);
  border-bottom: 1px solid rgba(0,212,255,0.15);
}

.terminal-dots { display: flex; gap: 6px; }
.terminal-dots span {
  width: 11px; height: 11px;
  border-radius: 50%;
}

.terminal-block {
  background: rgba(0,0,0,0.92);
  padding: 18px 20px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.85;
  color: rgba(0,255,65,0.78);
  white-space: pre-wrap;
  word-break: break-word;
  position: relative;
}

.copy-btn {
  background: rgba(0,212,255,0.1);
  border: 1px solid rgba(0,212,255,0.3);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1px;
  padding: 4px 10px;
  border-radius: 5px;
  cursor: pointer;
  transition: all 0.2s;
}
.copy-btn:hover { background: rgba(0,212,255,0.2); }

.quick-connect {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 14px 20px;
  padding: 11px 14px;
  border-radius: 7px;
  background: rgba(0,212,255,0.05);
  border: 1px solid rgba(0,212,255,0.2);
}
.quick-connect code {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
  word-break: break-all;
}

/* ── HINTS ───────────────────────────────────────────────── */
.hint-reveal-btn {
  width: 100%;
  text-align: left;
  background: rgba(255,200,0,0.04);
  border: 1px dashed rgba(255,200,0,0.25);
  color: rgba(255,200,0,0.5);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 2px;
  padding: 10px 14px;
  border-radius: 7px;
  cursor: pointer;
  transition: all 0.2s;
  margin-bottom: 8px;
}
.hint-reveal-btn:hover {
  background: rgba(255,200,0,0.08);
  color: rgba(255,200,0,0.8);
}

.hint-text {
  display: none;
  background: rgba(255,200,0,0.07);
  border: 1px solid rgba(255,200,0,0.25);
  border-radius: 7px;
  padding: 12px 14px;
  font-size: 12px;
  line-height: 1.6;
  color: rgba(255,200,0,0.85);
  margin-bottom: 8px;
}
.hint-text.visible { display: block; }

/* ── FLAG SUBMIT ─────────────────────────────────────────── */
.flag-panel {
  background: var(--bg2);
  border-radius: var(--radius-lg);
  padding: 24px;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
}
.flag-panel::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--green) 30%, var(--cyan) 70%, transparent);
}

.flag-input-row { display: flex; gap: 10px; margin-top: 14px; }

.flag-input {
  flex: 1;
  background: rgba(0,0,0,0.75);
  border: 1px solid rgba(0,255,65,0.22);
  border-radius: 7px;
  padding: 11px 16px;
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 13px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.flag-input:focus {
  border-color: rgba(0,255,65,0.6);
  box-shadow: 0 0 0 3px rgba(0,255,65,0.08);
}
.flag-input::placeholder { color: rgba(0,255,65,0.25); }
.flag-input:disabled { opacity: 0.4; cursor: not-allowed; }

.submit-btn {
  font-family: var(--font-title);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  padding: 11px 22px;
  border-radius: 7px;
  background: rgba(0,255,65,0.12);
  border: 1px solid rgba(0,255,65,0.45);
  color: var(--green);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s;
}
.submit-btn:hover { background: rgba(0,255,65,0.22); box-shadow: 0 0 18px rgba(0,255,65,0.15); }
.submit-btn:disabled { opacity: 0.4; cursor: not-allowed; }

.flag-note {
  font-size: 10px;
  color: rgba(0,255,65,0.3);
  margin-top: 8px;
}

.solved-box {
  background: rgba(0,255,65,0.07);
  border: 1px solid rgba(0,255,65,0.4);
  border-radius: 10px;
  padding: 22px;
  text-align: center;
  margin-top: 14px;
}
.solved-box-title {
  font-family: var(--font-title);
  font-size: 18px;
  font-weight: 900;
  color: var(--green);
  margin-bottom: 6px;
}
.solved-box-sub { font-size: 11px; color: rgba(0,255,65,0.5); letter-spacing: 1px; }

/* ── FLASH MESSAGES ──────────────────────────────────────── */
.flash {
  padding: 12px 18px;
  border-radius: 8px;
  font-size: 13px;
  letter-spacing: 0.5px;
  margin-bottom: 18px;
}
.flash.success { background: rgba(0,255,65,0.08);  border: 1px solid rgba(0,255,65,0.4);  color: var(--green); }
.flash.error   { background: rgba(255,60,60,0.08); border: 1px solid rgba(255,60,60,0.4); color: var(--red);   }
.flash.info    { background: rgba(0,212,255,0.08); border: 1px solid rgba(0,212,255,0.4); color: var(--cyan);  }

/* ── AUTH FORMS ──────────────────────────────────────────── */
.auth-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 80vh;
  padding: 40px 20px;
}

.auth-card {
  width: 100%;
  max-width: 440px;
  background: rgba(0,0,0,0.92);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 38px;
  position: relative;
  overflow: hidden;
}
.auth-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--green), transparent);
}

.auth-title {
  font-family: var(--font-title);
  font-size: 22px;
  font-weight: 900;
  text-align: center;
  margin-bottom: 6px;
  color: var(--green);
  text-shadow: 0 0 20px rgba(0,255,65,0.4);
}

.auth-sub {
  font-size: 10px;
  letter-spacing: 2px;
  color: rgba(0,255,65,0.35);
  text-align: center;
  margin-bottom: 28px;
}

.form-group { margin-bottom: 18px; }

.form-label {
  display: block;
  font-size: 9px;
  letter-spacing: 2px;
  color: rgba(0,255,65,0.5);
  margin-bottom: 7px;
}

.form-input {
  width: 100%;
  background: rgba(0,0,0,0.75);
  border: 1px solid rgba(0,255,65,0.22);
  border-radius: 7px;
  padding: 11px 14px;
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 13px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form-input:focus {
  border-color: rgba(0,255,65,0.6);
  box-shadow: 0 0 0 3px rgba(0,255,65,0.07);
}
.form-input::placeholder { color: rgba(0,255,65,0.22); }

.form-btn {
  width: 100%;
  font-family: var(--font-title);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 3px;
  padding: 13px;
  border-radius: 8px;
  background: rgba(0,255,65,0.12);
  border: 1px solid rgba(0,255,65,0.45);
  color: var(--green);
  cursor: pointer;
  transition: all 0.2s;
  margin-top: 8px;
}
.form-btn:hover { background: rgba(0,255,65,0.22); box-shadow: 0 0 20px rgba(0,255,65,0.15); }

.form-btn.purple {
  background: rgba(160,80,255,0.12);
  border-color: rgba(160,80,255,0.45);
  color: var(--purple);
}
.form-btn.purple:hover { background: rgba(160,80,255,0.22); }

.auth-switch {
  text-align: center;
  margin-top: 20px;
  font-size: 11px;
  letter-spacing: 1px;
  color: rgba(0,255,65,0.4);
}
.auth-switch a { color: var(--green); text-decoration: underline; }

/* ── LEADERBOARD ─────────────────────────────────────────── */
.lb-wrap { padding: 40px 0 60px; max-width: 900px; margin: 0 auto; }

.lb-header-row {
  display: grid;
  grid-template-columns: 52px 1fr 100px 120px;
  padding: 12px 22px;
  font-family: var(--font-title);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--cyan);
  background: rgba(0,212,255,0.07);
  border: 1px solid rgba(0,212,255,0.2);
  border-radius: 10px 10px 0 0;
}

.lb-row {
  display: grid;
  grid-template-columns: 52px 1fr 100px 120px;
  padding: 14px 22px;
  border: 1px solid rgba(0,255,65,0.07);
  border-top: none;
  align-items: center;
  font-size: 13px;
  transition: background 0.15s;
  background: rgba(0,0,0,0.6);
}
.lb-row:last-child { border-radius: 0 0 10px 10px; }
.lb-row:hover { background: rgba(0,255,65,0.03); }
.lb-row.me { background: rgba(0,255,65,0.05); }

.lb-rank { font-family: var(--font-title); font-size: 16px; font-weight: 700; }
.lb-pts  { font-family: var(--font-title); font-size: 16px; font-weight: 700; color: var(--green); text-align: right; }
.lb-solved { color: rgba(0,255,65,0.55); text-align: center; }

.me-badge {
  display: inline-block;
  font-size: 8px;
  padding: 2px 7px;
  border-radius: 4px;
  background: rgba(0,255,65,0.12);
  border: 1px solid rgba(0,255,65,0.3);
  color: var(--green);
  margin-left: 8px;
  vertical-align: middle;
}

/* ── PROFILE ─────────────────────────────────────────────── */
.profile-wrap { padding: 40px 0 60px; max-width: 860px; margin: 0 auto; }

.profile-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  align-items: center;
  gap: 22px;
  margin-bottom: 28px;
  position: relative;
  overflow: hidden;
}
.profile-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--green), transparent);
}

.avatar {
  width: 68px; height: 68px;
  border-radius: 12px;
  background: rgba(0,255,65,0.08);
  border: 1px solid rgba(0,255,65,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  flex-shrink: 0;
}

.profile-username {
  font-family: var(--font-title);
  font-size: 24px;
  font-weight: 900;
  color: var(--green);
  text-shadow: 0 0 20px rgba(0,255,65,0.35);
}
.profile-email  { font-size: 12px; color: rgba(0,255,65,0.4);  margin-top: 3px; }
.profile-joined { font-size: 11px; color: rgba(0,255,65,0.3);  margin-top: 2px; }
.profile-score-box { margin-left: auto; text-align: right; }

.profile-score {
  font-family: var(--font-title);
  font-size: 42px;
  font-weight: 900;
  color: var(--green);
  text-shadow: 0 0 24px rgba(0,255,65,0.4);
}

.progress-bar-wrap {
  height: 6px;
  border-radius: 6px;
  background: rgba(0,255,65,0.1);
  overflow: hidden;
  margin-top: 14px;
}
.progress-bar-fill {
  height: 100%;
  border-radius: 6px;
  background: linear-gradient(90deg, var(--green), var(--cyan));
  box-shadow: 0 0 10px rgba(0,255,65,0.4);
}

.solve-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 13px 16px;
  border-radius: 8px;
  margin-bottom: 8px;
  background: rgba(0,255,65,0.03);
  border: 1px solid rgba(0,255,65,0.12);
}
.solve-name { font-family: var(--font-title); font-size: 13px; font-weight: 700; color: #e0ffe0; }
.solve-pts  { font-family: var(--font-title); font-size: 15px; font-weight: 700; color: var(--green); }
.solve-date { font-size: 10px; color: rgba(0,255,65,0.35); }

/* ── FOOTER ──────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid rgba(0,255,65,0.1);
  padding: 26px 0;
  position: relative;
  z-index: 1;
}
.footer-inner {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.footer-logo { display: flex; align-items: center; gap: 8px; }
.footer-brand {
  font-family: var(--font-title);
  font-size: 13px;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 3px;
  text-shadow: 0 0 10px rgba(0,212,255,0.4);
}
.footer-links { display: flex; gap: 20px; font-size: 11px; color: rgba(0,255,65,0.4); }
.footer-links a { transition: color 0.2s; text-decoration: none; }
.footer-links a:hover { color: var(--green); }
.footer-copy { font-size: 9px; letter-spacing: 2px; color: rgba(0,255,65,0.2); text-align: center; }

/* ── UTILITY ─────────────────────────────────────────────── */
.fade-in { animation: fadeIn 0.4s ease forwards; }
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.empty-state {
  text-align: center;
  padding: 48px 20px;
  font-size: 13px;
  letter-spacing: 2px;
  color: rgba(0,255,65,0.3);
}

/* ── RESPONSIVE ──────────────────────────────────────────── */
@media (max-width: 900px) {
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .challenges-grid { grid-template-columns: 1fr; }
  .secuneus-badge { display: none; }
}
@media (max-width: 600px) {
  .nav-links { display: none; }
  .detail-title { font-size: 24px; }
  .detail-pts { font-size: 32px; }
  .profile-card { flex-direction: column; text-align: center; }
  .profile-score-box { margin-left: 0; }
  .lb-header-row,
  .lb-row { grid-template-columns: 40px 1fr 80px; }
  .lb-header-row span:last-child,
  .lb-row .lb-pts { display: none; }
}