:root {
  --green-950: #103829;
  --green-850: #164b36;
  --green-700: #246346;
  --green-500: #6f9c76;
  --green-200: #d8ead9;
  --green-100: #eef7ef;
  --sand: #fbf8ef;
  --ink: #18332a;
  --muted: #6e7d73;
  --white: #ffffff;
  --shadow: 0 24px 70px rgba(16, 56, 41, 0.14);
  --radius-xl: 28px;
  --radius-lg: 20px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: 'Outfit', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background:
    radial-gradient(circle at 8% 8%, rgba(216, 234, 217, .95), transparent 28%),
    radial-gradient(circle at 92% 12%, rgba(246, 237, 210, .86), transparent 26%),
    linear-gradient(135deg, var(--sand), #f2f8f0 52%, #edf6ef);
  color: var(--ink);
  min-height: 100vh;
}

.page-shell { width: min(1440px, calc(100% - 36px)); margin: 0 auto; padding: 26px 0 56px; }
.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-bottom: 26px;
}
.brand-lockup { display: flex; align-items: center; gap: 14px; }
.brand-mark {
  width: 48px; height: 48px; border-radius: 16px;
  background: linear-gradient(145deg, var(--green-700), var(--green-950));
  color: white; display: grid; place-items: center; font-family: 'Fraunces', serif; font-size: 28px; box-shadow: var(--shadow);
}
.brand-title { font-family: 'Fraunces', serif; font-size: 24px; font-weight: 600; color: var(--green-950); }
.brand-subtitle { color: var(--muted); font-size: 14px; margin-top: 2px; }
.status-pill {
  border: 1px solid rgba(36, 99, 70, .18); padding: 10px 16px; border-radius: 999px;
  background: rgba(255,255,255,.66); color: var(--green-850); font-weight: 600;
}

.hero-panel {
  min-height: 300px; border-radius: var(--radius-xl); padding: 40px;
  background: linear-gradient(135deg, rgba(16,56,41,.96), rgba(36,99,70,.9)), url('../img/default-slide.jpg') center/cover;
  color: #fff; display: grid; grid-template-columns: 1.4fr .6fr; gap: 30px; align-items: end; box-shadow: var(--shadow);
  overflow: hidden; position: relative;
}
.hero-panel:before { content: ''; position: absolute; inset: 0; background: radial-gradient(circle at 72% 12%, rgba(255,255,255,.2), transparent 28%); pointer-events: none; }
.hero-copy, .hero-card { position: relative; z-index: 1; }
.eyebrow { margin: 0 0 10px; text-transform: uppercase; letter-spacing: .16em; font-size: 12px; font-weight: 700; color: #b9d9bd; }
h1 { font-family: 'Fraunces', serif; font-size: clamp(38px, 5vw, 74px); line-height: .96; margin: 0; max-width: 850px; }
.hero-text { max-width: 720px; color: rgba(255,255,255,.82); font-size: 19px; line-height: 1.55; }
.hero-card {
  background: rgba(255,255,255,.13); border: 1px solid rgba(255,255,255,.24); border-radius: 24px; padding: 22px;
  backdrop-filter: blur(14px); display: grid; gap: 12px;
}
.hero-card strong { font-size: 22px; }
.hero-card span { color: rgba(255,255,255,.84); }

.workspace { display: grid; grid-template-columns: 410px 1fr; gap: 24px; margin-top: 24px; align-items: start; }
.input-panel, .output-panel {
  background: rgba(255,255,255,.78); border: 1px solid rgba(36,99,70,.13); border-radius: var(--radius-xl); box-shadow: var(--shadow);
}
.input-panel { padding: 24px; position: sticky; top: 18px; }
.form-heading h2, .result-header h2, .empty-state h2 { font-family: 'Fraunces', serif; color: var(--green-950); margin: 0; }
.form-heading p { color: var(--muted); margin: 6px 0 22px; line-height: 1.45; }
.field-label { display: block; margin: 18px 0 8px; font-weight: 700; color: var(--green-850); }
input[type="text"], input[type="password"], select {
  width: 100%; border: 1px solid rgba(36,99,70,.18); border-radius: 16px; padding: 15px 16px; font: inherit; color: var(--ink);
  background: #fff; outline: none; transition: .2s ease; min-height: 52px;
}
input:focus, select:focus { border-color: var(--green-700); box-shadow: 0 0 0 4px rgba(111,156,118,.18); }
.upload-box {
  display: grid; gap: 6px; padding: 22px; border: 1.5px dashed rgba(36,99,70,.35); border-radius: 18px;
  background: var(--green-100); cursor: pointer;
}
.upload-box input { display: none; }
.upload-title { color: var(--green-850); font-weight: 700; }
.upload-note { color: var(--muted); font-size: 14px; }
.photo-preview { width: 100%; height: 210px; object-fit: cover; border-radius: 18px; margin-top: 12px; border: 1px solid rgba(36,99,70,.14); }
.toggle-grid { display: grid; grid-template-columns: 1fr; gap: 10px; margin-top: 18px; }
.toggle-card { display: flex; gap: 10px; align-items: center; padding: 14px; border-radius: 16px; background: #fff; border: 1px solid rgba(36,99,70,.12); font-weight: 600; }
.api-details { margin-top: 14px; padding: 14px; background: rgba(238,247,239,.78); border-radius: 18px; color: var(--muted); }
.api-details summary { cursor: pointer; color: var(--green-850); font-weight: 700; }
.api-details input { margin-top: 12px; }
.api-details p { margin-bottom: 0; font-size: 13px; line-height: 1.45; }
code { background: rgba(16,56,41,.08); padding: 2px 6px; border-radius: 8px; }
.primary-btn, .secondary-btn {
  border: 0; cursor: pointer; font: inherit; font-weight: 800; border-radius: 16px; transition: .2s ease;
}
.primary-btn { width: 100%; margin-top: 20px; padding: 16px 18px; background: var(--green-850); color: white; box-shadow: 0 16px 30px rgba(16,56,41,.22); }
.primary-btn:hover, .secondary-btn:hover { transform: translateY(-1px); }
.primary-btn:disabled, .secondary-btn:disabled { opacity: .6; cursor: progress; transform: none; }

.output-panel { min-height: 620px; padding: 26px; }
.empty-state { min-height: 560px; display: grid; place-items: center; align-content: center; text-align: center; gap: 10px; color: var(--muted); }
.empty-icon { width: 88px; height: 88px; border-radius: 30px; display: grid; place-items: center; background: var(--green-100); font-size: 42px; margin-bottom: 8px; }
.result-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; border-bottom: 1px solid rgba(36,99,70,.12); padding-bottom: 18px; }
.result-header p { color: var(--muted); margin: 5px 0 0; }
.action-row { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 10px; }
.secondary-btn, .ghost-link { padding: 12px 14px; background: var(--green-100); color: var(--green-850); border: 1px solid rgba(36,99,70,.14); text-decoration: none; border-radius: 14px; font-weight: 800; font-size: 14px; }
.ghost-link { display: inline-flex; align-items: center; }
.benefit-box { margin: 18px 0; background: linear-gradient(135deg, var(--green-100), #fff); border: 1px solid rgba(36,99,70,.12); border-radius: 20px; padding: 16px 18px; color: var(--green-850); font-weight: 600; }
.video-box { margin: 18px 0; padding: 16px; border-radius: 20px; background: #fff; border: 1px solid rgba(36,99,70,.14); }
.video-box video { width: 100%; border-radius: 18px; display: block; background: #000; }
.slides-container { display: grid; gap: 16px; }
.slide-card { display: grid; grid-template-columns: 240px 1fr; gap: 18px; padding: 16px; border-radius: 22px; background: #fff; border: 1px solid rgba(36,99,70,.12); }
.slide-card img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; border-radius: 18px; background: var(--green-100); }
.slide-content h3 { margin: 0 0 8px; font-size: 20px; color: var(--green-950); }
.slide-script { margin: 0; color: var(--ink); font-size: 17px; line-height: 1.48; }
.slide-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.badge { border-radius: 999px; background: var(--green-100); color: var(--green-850); font-size: 13px; padding: 6px 10px; font-weight: 700; }
.prompt-box { margin-top: 12px; border-left: 3px solid var(--green-500); padding: 9px 12px; background: #f7fbf6; color: var(--muted); font-size: 13px; line-height: 1.45; border-radius: 0 12px 12px 0; }
.error-line { margin-top: 10px; color: #9a3f2c; font-size: 13px; font-weight: 700; }
.toast { position: fixed; right: 24px; bottom: 24px; background: var(--green-950); color: white; padding: 14px 18px; border-radius: 16px; box-shadow: var(--shadow); max-width: 360px; z-index: 20; }

@media (max-width: 1040px) {
  .hero-panel, .workspace { grid-template-columns: 1fr; }
  .input-panel { position: static; }
}
@media (max-width: 720px) {
  .page-shell { width: min(100% - 22px, 1440px); padding-top: 16px; }
  .topbar, .result-header { flex-direction: column; align-items: flex-start; }
  .hero-panel { padding: 26px; }
  .slide-card { grid-template-columns: 1fr; }
  .action-row { justify-content: flex-start; }
}