:root {
  --bg: #0a0a0c;
  --panel: rgba(17, 17, 20, 0.92);
  --panel-2: rgba(24, 24, 28, 0.96);
  --border: rgba(255, 255, 255, 0.08);
  --text: #f7f7f7;
  --muted: #b6bac3;
  --orange: #ff7a1a;
  --orange-soft: rgba(255, 122, 26, 0.18);
  --blue: #23b7ff;
  --blue-soft: rgba(35, 183, 255, 0.16);
  --success: #ffffff;
  --shadow: 0 18px 60px rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(255, 122, 26, 0.14), transparent 28%),
    radial-gradient(circle at top right, rgba(35, 183, 255, 0.12), transparent 30%),
    linear-gradient(180deg, #0a0a0c 0%, #101114 100%);
  color: var(--text);
}

.page-shell {
  min-height: 100vh;
  padding: 28px;
  position: relative;
  overflow: hidden;
}

.page-glow {
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 999px;
  filter: blur(120px);
  opacity: 0.4;
  pointer-events: none;
}

.page-glow-left {
  background: var(--orange-soft);
  top: -120px;
  left: -120px;
}

.page-glow-right {
  background: var(--blue-soft);
  bottom: -120px;
  right: -120px;
}

.proof-card {
  position: relative;
  max-width: 1320px;
  margin: 0 auto;
  background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.015));
  border: 1px solid var(--border);
  border-radius: 28px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
  overflow: hidden;
}

.proof-header {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 28px 32px 22px;
  border-bottom: 1px solid var(--border);
  background:
    linear-gradient(90deg, rgba(255,122,26,0.08), transparent 30%),
    linear-gradient(270deg, rgba(35,183,255,0.08), transparent 30%);
}

.brand {
  flex-shrink: 0;
}

.brand-logo {
  display: block;
  width: 180px;
  max-width: 100%;
  height: auto;
}

.header-copy {
  min-width: 0;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 8px;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue);
  font-weight: 700;
}

.proof-header h1 {
  margin: 0 0 8px;
  font-size: 38px;
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.proof-header p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
}

.proof-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) 420px;
  gap: 24px;
  padding: 24px;
}

.mockup-panel {
  min-width: 0;
}

.mockup-frame {
  position: relative;
  background: linear-gradient(180deg, rgba(255,255,255,0.025), rgba(255,255,255,0.01));
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 18px;
  overflow: hidden;
}

.mockup-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(255,122,26,0.08), transparent 28%),
    linear-gradient(315deg, rgba(35,183,255,0.08), transparent 28%);
  pointer-events: none;
}

#mockup-image {
  position: relative;
  display: block;
  width: 100%;
  height: auto;
  border-radius: 18px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.28);
}

.action-panel {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.action-card {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 24px;
}

.action-card h2 {
  margin: 0 0 10px;
  font-size: 24px;
  line-height: 1.1;
}

.action-card p {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.6;
}

.actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 18px;
}

button {
  appearance: none;
  border: none;
  border-radius: 14px;
  padding: 15px 18px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 700;
  transition: transform 0.16s ease, box-shadow 0.16s ease, opacity 0.16s ease;
}

button:hover {
  transform: translateY(-1px);
}

#approve-btn {
  background: linear-gradient(135deg, var(--orange), #ff953f);
  color: #111;
  box-shadow: 0 12px 24px rgba(255, 122, 26, 0.22);
}

button.secondary,
.submit-feedback {
  background: #1b1d22;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.12);
}

button.secondary:hover,
.submit-feedback:hover {
  box-shadow: 0 8px 18px rgba(0,0,0,0.22);
}

.changes-box {
  padding-top: 8px;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.changes-box label {
  display: block;
  margin-bottom: 10px;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
}

textarea {
  width: 100%;
  min-height: 130px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.12);
  background: #121318;
  color: #fff;
  padding: 14px;
  font: inherit;
  resize: vertical;
  margin-bottom: 12px;
}

textarea::placeholder {
  color: #8d93a1;
}

#message {
  margin-top: 12px;
  color: #d2d6de;
  font-size: 14px;
  line-height: 1.5;
}

.info-strip {
  display: flex;
  gap: 10px;
}

.info-pill {
  height: 8px;
  border-radius: 999px;
  flex: 1;
}

.info-pill-orange {
  background: linear-gradient(90deg, var(--orange), rgba(255,122,26,0.22));
}

.info-pill-blue {
  background: linear-gradient(90deg, var(--blue), rgba(35,183,255,0.2));
}

.hidden {
  display: none !important;
}

@media (max-width: 980px) {
  .proof-layout {
    grid-template-columns: 1fr;
  }

  .proof-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .brand-logo {
    width: 150px;
  }
}

@media (max-width: 640px) {
  .page-shell {
    padding: 14px;
  }

  .proof-header {
    padding: 22px 20px 18px;
  }

  .proof-header h1 {
    font-size: 30px;
  }

  .proof-layout {
    padding: 16px;
    gap: 16px;
  }

  .action-card,
  .mockup-frame {
    padding: 16px;
  }
}