/* ==========================================================================
   NO PAIN NO SALE - MINIMALIST / MODERN EDITORIAL DESIGN
   Aesthetic inspired by the official book cover (Craig Pratsch)
   Clean monochrome palette, high-contrast typography, refined layout.
   ========================================================================== */

:root {
  /* Core Monochrome Palette */
  --color-bg: #FFFFFF;
  --color-bg-subtle: #F9F9FA;
  --color-bg-card: #FFFFFF;
  --color-text-main: #0A0A0A;
  --color-text-muted: #525252;
  --color-text-subtle: #737373;
  --color-border: #E5E5E5;
  --color-border-dark: #0A0A0A;
  --color-border-focus: #0A0A0A;

  /* Typography */
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* Layout */
  --max-width: 1140px;
  --header-height: 84px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-pill: 9999px;

  /* Transitions */
  --transition: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Base Resets */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 20px);
  background-color: var(--color-bg);
  color: var(--color-text-main);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  line-height: 1.65;
  background-color: var(--color-bg);
  color: var(--color-text-main);
}

/* Top Audience Banner */
.top-banner {
  background-color: #0A0A0A;
  color: #FFFFFF;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-align: center;
  padding: 7px 16px;
  text-transform: uppercase;
}

/* ==========================================================================
   SITE HEADER & TAB CONTROLLER
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
}

.header-container {
  max-width: var(--max-width);
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

/* Brand */
.brand-link {
  text-decoration: none;
  display: flex;
  flex-direction: column;
}

.author-tagline {
  font-size: 0.62rem;
  letter-spacing: 0.24em;
  font-weight: 600;
  color: var(--color-text-subtle);
  text-transform: uppercase;
  margin-bottom: 2px;
}

.brand-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--color-text-main);
  line-height: 1;
}

/* Minimalist Tabs */
.tabs-nav {
  display: flex;
  align-items: center;
}

.tab-list {
  display: flex;
  align-items: center;
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: 4px;
  gap: 4px;
}

.tab-btn {
  border: none;
  background: transparent;
  padding: 9px 24px;
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-text-muted);
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all var(--transition);
  outline: none;
}

.tab-btn:hover {
  color: var(--color-text-main);
}

.tab-btn.active {
  background-color: #0A0A0A;
  color: #FFFFFF;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

.tab-btn:focus-visible {
  outline: 2px solid #0A0A0A;
  outline-offset: 2px;
}

/* Header Action */
.header-actions {
  display: flex;
  align-items: center;
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-decoration: none;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  border: 1px solid transparent;
}

.btn-dark {
  background-color: #0A0A0A;
  color: #FFFFFF;
  border-color: #0A0A0A;
}

.btn-dark:hover {
  background-color: #262626;
  border-color: #262626;
  transform: translateY(-1px);
}

.btn-outline {
  background-color: transparent;
  color: #0A0A0A;
  border-color: #0A0A0A;
}

.btn-outline:hover {
  background-color: #0A0A0A;
  color: #FFFFFF;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.82rem;
}

/* ==========================================================================
   MAIN CONTENT & TABS PANELS
   ========================================================================== */

.main-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 40px 24px 80px;
}

.tab-panel {
  display: none;
  animation: fadeIn 0.3s ease forwards;
}

.tab-panel.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   BOOK TAB - HERO SECTION
   ========================================================================== */

.hero-split {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
  gap: 60px;
  padding: 30px 0 70px;
  border-bottom: 1px solid var(--color-border);
}

.hero-coming-soon-banner {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: #0A0A0A;
  color: #FFFFFF;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  margin-bottom: 20px;
  width: fit-content;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.hero-coming-soon-banner .badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #FFFFFF;
  display: inline-block;
}

.editorial-label {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  font-weight: 700;
  color: var(--color-text-subtle);
  margin-bottom: 16px;
  text-transform: uppercase;
}

.main-title {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 6vw, 4.8rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: #0A0A0A;
  margin-bottom: 24px;
}

.tagline-quote {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.22rem;
  line-height: 1.55;
  color: #171717;
  border-left: 3px solid #0A0A0A;
  padding-left: 20px;
  margin-bottom: 22px;
}

.hero-subtext {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 34px;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

/* Book Cover Presentation */
.hero-media-col {
  display: flex;
  justify-content: center;
}

.book-cover-frame {
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 350px;
}

.book-cover-image {
  width: 100%;
  height: auto;
  max-width: 350px;
  border-radius: 4px;
  box-shadow: 0 16px 38px rgba(0, 0, 0, 0.16), 0 4px 12px rgba(0, 0, 0, 0.08);
  border: 1px solid rgba(0, 0, 0, 0.06);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.book-cover-image:hover {
  transform: translateY(-4px);
  box-shadow: 0 22px 48px rgba(0, 0, 0, 0.22);
}

.cover-caption {
  font-size: 0.72rem;
  color: var(--color-text-subtle);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-top: 14px;
}

/* ==========================================================================
   EDITORIAL CONTENT BLOCKS
   ========================================================================== */

.content-block {
  padding: 60px 0;
}

.block-header {
  margin-bottom: 36px;
}

.block-header.text-center {
  text-align: center;
}

.section-kicker {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  font-weight: 700;
  color: var(--color-text-subtle);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.section-heading {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 3.8vw, 2.7rem);
  font-weight: 800;
  color: #0A0A0A;
  letter-spacing: -0.01em;
}

.separator-line {
  width: 60px;
  height: 2px;
  background-color: #0A0A0A;
  margin-top: 16px;
}

.separator-line.center-auto {
  margin-left: auto;
  margin-right: auto;
}

.editorial-body {
  max-width: 860px;
  font-size: 1.1rem;
  line-height: 1.8;
  color: #262626;
}

.lead-paragraph {
  font-size: 1.25rem;
  line-height: 1.7;
  color: #0A0A0A;
  margin-bottom: 28px;
}

/* Callout Box: Inside You'll Discover */
.discover-box {
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-left: 4px solid #0A0A0A;
  border-radius: var(--radius-sm);
  padding: 36px 32px;
  margin: 36px 0;
}

.discover-title {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-weight: 700;
  color: #0A0A0A;
  margin-bottom: 22px;
}

.clean-bullet-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.clean-bullet-list li {
  position: relative;
  padding-left: 24px;
  font-size: 1.02rem;
  color: #262626;
  line-height: 1.65;
}

.clean-bullet-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: #0A0A0A;
  font-weight: bold;
}

.clean-bullet-list li strong {
  color: #0A0A0A;
}

.closing-summary {
  font-size: 1.12rem;
  line-height: 1.8;
  color: #262626;
  margin-top: 28px;
}

/* Editorial Transition Banner */
.editorial-notice-box {
  background-color: #0A0A0A;
  color: #FFFFFF;
  border-radius: var(--radius-md);
  padding: 40px;
  margin-top: 50px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

.editorial-notice-box h4 {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.editorial-notice-box p {
  font-size: 0.95rem;
  color: #D4D4D8;
  line-height: 1.6;
}

.editorial-notice-box .btn-dark {
  background-color: #FFFFFF;
  color: #0A0A0A;
  border-color: #FFFFFF;
  white-space: nowrap;
}

.editorial-notice-box .btn-dark:hover {
  background-color: #E5E5E5;
}

/* ==========================================================================
   SEMINAR TAB - HEADERS & METADATA
   ========================================================================== */

.seminar-intro-block {
  padding: 20px 0 50px;
  border-bottom: 1px solid var(--color-border);
}

.seminar-meta-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 36px;
  padding: 24px;
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.meta-item {
  display: flex;
  flex-direction: column;
}

.meta-label {
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  font-weight: 700;
  color: var(--color-text-subtle);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.meta-value {
  font-size: 0.96rem;
  font-weight: 600;
  color: #0A0A0A;
}

.sub-heading {
  font-family: var(--font-serif);
  font-size: 1.55rem;
  font-weight: 700;
  color: #0A0A0A;
  margin-bottom: 16px;
}

.contrast-statement {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: #0A0A0A;
  margin: 24px 0;
}

/* Revenue Cycle Flow */
.cycle-callout {
  background-color: #FFFFFF;
  border: 1px solid #0A0A0A;
  border-radius: var(--radius-sm);
  padding: 28px;
  margin: 32px 0;
  text-align: center;
}

.cycle-label {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  font-weight: 700;
  color: var(--color-text-subtle);
  text-transform: uppercase;
  margin-bottom: 14px;
}

.cycle-flow {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.step-badge {
  display: inline-block;
  padding: 8px 24px;
  background-color: #0A0A0A;
  color: #FFFFFF;
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.05em;
  border-radius: var(--radius-sm);
}

.step-arrow {
  font-size: 1.4rem;
  color: #0A0A0A;
  font-weight: bold;
}

.cycle-desc {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  max-width: 620px;
  margin: 0 auto;
}

/* ==========================================================================
   SEMINAR REQUEST FORM
   ========================================================================== */

.form-container-block {
  padding: 60px 0 20px;
}

.form-instructions {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 640px;
  margin: 12px auto 0;
}

.form-card-minimal {
  max-width: 760px;
  margin: 40px auto 0;
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 44px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

/* Form Alerts */
.alert-box {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  margin-bottom: 28px;
  font-size: 0.92rem;
}

.alert-success {
  background-color: #F0FDF4;
  border: 1px solid #86EFAC;
  color: #166534;
}

.alert-error {
  background-color: #FEF2F2;
  border: 1px solid #FCA5A5;
  color: #991B1B;
}

.alert-icon {
  font-weight: bold;
  font-size: 1.1rem;
}

/* Inputs & Grid */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  margin-bottom: 26px;
}

.field-wrap {
  display: flex;
  flex-direction: column;
}

.field-wrap.full-span {
  grid-column: 1 / -1;
}

.field-wrap label {
  font-size: 0.84rem;
  font-weight: 600;
  color: #0A0A0A;
  margin-bottom: 7px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.field-wrap label .req {
  color: #DC2626;
}

.field-wrap label .optional {
  font-size: 0.74rem;
  color: var(--color-text-subtle);
  font-weight: normal;
}

.field-wrap input,
.field-wrap select,
.field-wrap textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: #0A0A0A;
  background-color: #FFFFFF;
  outline: none;
  transition: border-color var(--transition);
}

.field-wrap input::placeholder,
.field-wrap textarea::placeholder {
  color: #A3A3A3;
}

.field-wrap select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%230A0A0A' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
}

.field-wrap input:focus,
.field-wrap select:focus,
.field-wrap textarea:focus {
  border-color: #0A0A0A;
  box-shadow: 0 0 0 1px #0A0A0A;
}

/* Modern Validation Feedback */
.error-hint {
  display: none;
  color: #DC2626;
  font-size: 0.76rem;
  margin-top: 5px;
}

.field-wrap input:user-invalid,
.field-wrap textarea:user-invalid {
  border-color: #DC2626;
  background-color: #FEF2F2;
}

.field-wrap input:user-invalid + .error-hint,
.field-wrap textarea:user-invalid + .error-hint {
  display: block;
}

/* Submit Row */
.form-submit-row {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.btn-submit {
  width: 100%;
  padding: 14px 28px;
  font-size: 0.95rem;
}

.btn-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #FFFFFF;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.form-privacy-note {
  font-size: 0.76rem;
  color: var(--color-text-subtle);
  text-align: center;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.site-footer {
  border-top: 1px solid var(--color-border);
  background-color: var(--color-bg-subtle);
  padding: 60px 0 30px;
}

.footer-wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px 40px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
}

.footer-brand-side {
  max-width: 420px;
}

.footer-author {
  display: block;
  font-size: 0.65rem;
  letter-spacing: 0.22em;
  font-weight: 700;
  color: var(--color-text-subtle);
  margin-bottom: 4px;
}

.footer-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 800;
  color: #0A0A0A;
  margin-bottom: 12px;
}

.footer-blurb {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.footer-links-side {
  display: flex;
  gap: 50px;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col-title {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--color-text-subtle);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.footer-link {
  color: #0A0A0A;
  text-decoration: none;
  font-size: 0.88rem;
  transition: color var(--transition);
}

.footer-link:hover {
  text-decoration: underline;
}

.footer-domain {
  font-size: 0.8rem;
  color: var(--color-text-subtle);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 24px;
}

.footer-bottom-wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--color-text-subtle);
}

.footer-mature-tag {
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.72rem;
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */

@media (max-width: 900px) {
  .hero-split {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }

  .hero-coming-soon-banner {
    margin-left: auto;
    margin-right: auto;
  }

  .tagline-quote {
    border-left: none;
    border-top: 2px solid #0A0A0A;
    border-bottom: 2px solid #0A0A0A;
    padding: 16px 0;
  }

  .hero-cta-group {
    justify-content: center;
  }

  .editorial-notice-box {
    flex-direction: column;
    text-align: center;
    padding: 30px 24px;
  }

  .editorial-notice-box .btn-dark {
    width: 100%;
  }

  .footer-wrap {
    flex-direction: column;
    gap: 30px;
  }
}

@media (max-width: 640px) {
  .header-container {
    padding: 0 16px;
  }

  .brand-title {
    font-size: 1.05rem;
  }

  .header-actions {
    display: none;
  }

  .tab-btn {
    padding: 7px 16px;
    font-size: 0.82rem;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .form-card-minimal {
    padding: 24px 18px;
  }

  .footer-links-side {
    flex-direction: column;
    gap: 24px;
  }

  .footer-bottom-wrap {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}