/* ============ Tokens — Dr. Victor Maciel, Neurologia ============ */
:root {
  --navy-950: #0A1F2E;
  --navy-900: #0F2C40;
  --navy-800: #163C54;
  --navy-700: #1F4E6B;
  --navy-600: #2C6684;
  --navy-500: #3D7EA0;
  --navy-100: #E4EDF2;
  --navy-50:  #F1F6F8;

  --teal-800: #1C4A44;
  --teal-700: #256058;
  --teal-600: #2F7D6B;
  --teal-500: #3F9484;
  --teal-400: #5CAE9C;
  --teal-100: #E1F0EB;
  --teal-50:  #F0F8F5;

  --paper-0:   #FCFAF6;
  --paper-50:  #F7F4EE;
  --paper-100: #EFEAE1;
  --stone-200: #E1DAD0;
  --stone-300: #C9C0B3;
  --stone-400: #A79C8C;
  --stone-500: #85796A;
  --stone-600: #665C50;
  --ink-700:   #443E37;
  --ink-800:   #2B2723;
  --ink-900:   #1B1815;

  --text-heading: var(--ink-900);
  --text-body: var(--ink-800);
  --text-muted: var(--stone-500);
  --text-inverse: var(--paper-0);
  --text-link: var(--navy-700);
  --text-link-hover: var(--navy-800);

  --surface-page: var(--paper-0);
  --surface-card: #FFFFFF;
  --surface-sunken: var(--paper-50);
  --surface-inverse: var(--navy-950);
  --surface-accent: var(--teal-50);
  --surface-border: var(--stone-200);
  --surface-border-strong: var(--stone-300);

  --action-primary: var(--navy-800);
  --action-primary-hover: var(--navy-900);
  --action-primary-active: var(--navy-950);
  --action-secondary: var(--teal-600);
  --action-secondary-hover: var(--teal-700);

  --feedback-info: var(--navy-600);
  --feedback-info-bg: var(--navy-50);

  --focus-ring: #3F9484;

  --font-display: 'Source Serif 4', 'Iowan Old Style', Georgia, serif;
  --font-body: 'IBM Plex Sans', -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, 'SFMono-Regular', monospace;

  --text-size-xs: 13px;
  --text-size-sm: 15px;
  --text-size-base: 17px;
  --text-size-md: 19px;
  --text-size-lg: 23px;
  --text-size-xl: 29px;
  --text-size-2xl: 37px;
  --text-size-3xl: 47px;

  --leading-tight: 1.15;
  --leading-normal: 1.55;
  --leading-relaxed: 1.7;
  --tracking-tight: -0.01em;
  --tracking-wider: 0.09em;

  --space-1: 4px;  --space-2: 8px;  --space-3: 12px; --space-4: 16px;
  --space-5: 20px; --space-6: 24px; --space-8: 32px; --space-10: 40px;
  --space-12: 48px; --space-16: 64px; --space-20: 80px; --space-24: 96px;

  --radius-sm: 4px; --radius-md: 8px; --radius-lg: 14px; --radius-full: 999px;

  --shadow-sm: 0 2px 6px rgba(27, 24, 21, 0.07);
  --shadow-md: 0 8px 24px rgba(27, 24, 21, 0.09);

  --ease-standard: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-base: 200ms;

  --content-max-width: 1120px;
  --content-max-width-narrow: 760px;
}

/* ============ Base ============ */
* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--surface-page);
  color: var(--text-body);
  font-family: var(--font-body);
  font-size: var(--text-size-base);
  line-height: var(--leading-normal);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--text-heading);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  margin: 0 0 var(--space-4) 0;
  font-weight: 600;
}
p { margin: 0 0 var(--space-4) 0; }
a { color: var(--text-link); text-decoration: underline; text-decoration-color: var(--navy-500); text-underline-offset: 2px; }
a:hover { color: var(--text-link-hover); text-decoration-color: currentColor; }
img { max-width: 100%; display: block; }
button { font: inherit; }

.app-shell { min-height: 100vh; display: flex; flex-direction: column; }

/* ============ Header ============ */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(252,250,246,0.85);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--surface-border);
  padding: 18px 40px;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 16px;
}
.brand-mark { background: none; border: none; cursor: pointer; padding: 0; display: flex; flex-direction: column; align-items: flex-start; }
.brand-name { font-family: var(--font-display); font-weight: 600; font-size: 22px; color: var(--text-heading); }
.brand-role { font-family: var(--font-body); font-weight: 500; font-size: 10px; letter-spacing: var(--tracking-wider); text-transform: uppercase; color: var(--teal-700); }

.site-nav { display: flex; gap: 28px; align-items: center; flex-wrap: wrap; }
.nav-link {
  background: none; border: none; cursor: pointer; font-family: var(--font-body);
  font-size: 15px; font-weight: 500; color: var(--text-muted);
  border-bottom: 2px solid transparent; padding-bottom: 4px;
  transition: color var(--duration-base) var(--ease-standard);
}
.nav-link:hover { color: var(--text-heading); }
.nav-link.is-active { font-weight: 600; color: var(--text-heading); border-bottom-color: var(--teal-600); }

/* ============ Buttons ============ */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--font-body); font-weight: 600; text-decoration: none;
  border-radius: var(--radius-md); border: 1px solid transparent; cursor: pointer;
  transition: background var(--duration-base) var(--ease-standard), border-color var(--duration-base) var(--ease-standard);
}
.btn-md { font-size: 15px; padding: 0 20px; height: 40px; }
.btn-lg { font-size: 16px; padding: 0 28px; height: 48px; }
.btn-accent { background: var(--teal-600); color: #fff; }
.btn-accent:hover { background: var(--teal-700); }
.btn-primary { background: var(--action-primary); color: #fff; }
.btn-primary:hover { background: var(--action-primary-hover); }
.btn-secondary-inverse { background: transparent; color: #fff; border-color: rgba(255,255,255,0.4); }
.btn-secondary-inverse:hover { background: rgba(255,255,255,0.1); }

/* ============ Badge ============ */
.badge {
  display: inline-flex; align-items: center; height: 24px; padding: 0 12px;
  border-radius: var(--radius-full); font-size: 13px; font-weight: 500; white-space: nowrap;
}
.badge-teal { background: var(--teal-100); color: var(--teal-800); }
.badge-navy { background: var(--navy-100); color: var(--navy-800); }
.badge-neutral { background: var(--paper-100); color: var(--stone-600); }

/* ============ Card ============ */
.card {
  background: var(--surface-card);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--space-6);
}

/* ============ Callout ============ */
.callout { border-radius: var(--radius-lg); padding: var(--space-6); }
.callout-info { background: var(--feedback-info-bg); }
.callout-teal { background: var(--surface-accent); }
.callout h3 { font-family: var(--font-body); font-size: 17px; font-weight: 600; margin-bottom: var(--space-2); }
.callout p { font-size: 15px; color: var(--text-body); margin: 0; }

/* ============ Tabs ============ */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--surface-border); }
.tab-btn {
  background: none; border: none; cursor: pointer; padding: 10px 4px; margin-right: 24px;
  font-family: var(--font-body); font-size: 15px; font-weight: 500; color: var(--text-muted);
  border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.tab-btn.is-active { color: var(--text-heading); font-weight: 600; border-bottom-color: var(--teal-600); }

/* ============ Layout helpers ============ */
.container { max-width: var(--content-max-width); margin: 0 auto; padding: 72px 40px; }
.container-narrow { max-width: var(--content-max-width-narrow); margin: 0 auto; padding: 72px 40px; }
.main-content { flex: 1; }
.section-title { font-size: var(--text-size-xl); text-align: center; margin-bottom: var(--space-10); }
.section-lead { text-align: center; font-size: 16px; color: var(--text-muted); margin-bottom: var(--space-10); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }

/* ============ Hero ============ */
.hero { background: var(--navy-950); color: #fff; padding: 96px 40px 88px; text-align: center; }
.hero-inner { max-width: 720px; margin: 0 auto; }
.hero-badges { display: flex; gap: 8px; justify-content: center; margin-bottom: 20px; flex-wrap: wrap; }
.hero h1 { font-size: 47px; color: #fff; margin-bottom: 16px; }
.hero-lead { font-size: 19px; color: var(--stone-300); line-height: 1.6; margin-bottom: 32px; }
.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ============ Sunken section ============ */
.sunken { background: var(--surface-sunken); padding: 72px 40px; }
.sunken-inner { max-width: var(--content-max-width); margin: 0 auto; display: flex; gap: 48px; align-items: center; flex-wrap: wrap; }
.sunken-inner .col-text { flex: 1 1 320px; }
.sunken-inner .col-badges { flex: 1 1 240px; display: flex; gap: 12px; flex-wrap: wrap; }

/* ============ Teaser cards ============ */
.teaser-card { display: flex; flex-direction: column; }
.teaser-card h3 { font-size: 19px; margin-bottom: var(--space-2); }
.teaser-card p { font-size: 15px; color: var(--text-muted); line-height: 1.6; margin-bottom: var(--space-4); flex: 1; }
.teaser-link { background: none; border: none; padding: 0; cursor: pointer; font-family: var(--font-body); font-weight: 600; font-size: 14px; color: var(--navy-800); text-align: left; }
.teaser-link:hover { color: var(--navy-900); }

/* ============ About page ============ */
.about-head { display: flex; gap: 32px; align-items: flex-start; flex-wrap: wrap; margin-bottom: var(--space-8); }
.avatar-placeholder {
  width: 160px; height: 160px; border-radius: 50%; flex-shrink: 0;
  background: var(--navy-100); color: var(--navy-700);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-body); font-size: 12px; text-align: center; padding: 8px;
}
.avatar-photo {
  width: 160px; height: 160px; border-radius: 50%; flex-shrink: 0;
  object-fit: cover; border: 1px solid var(--surface-border); box-shadow: var(--shadow-sm);
}
.about-badges { display: flex; gap: 8px; margin-bottom: var(--space-4); flex-wrap: wrap; }
.about-bio { font-size: 18px; color: var(--text-body); line-height: 1.7; }

.formacao-item { display: flex; gap: 24px; align-items: baseline; }
.formacao-period { font-family: var(--font-mono); font-size: 13px; color: var(--text-muted); min-width: 100px; }
.formacao-title { font-weight: 600; font-size: 17px; color: var(--text-heading); }
.formacao-place { font-size: 15px; color: var(--text-muted); }
.stack { display: flex; flex-direction: column; gap: var(--space-4); }
.atuacao-card p { font-size: 17px; line-height: 1.8; color: var(--text-body); margin: 0; }
.atuacao-badges { display: flex; gap: 8px; flex-wrap: wrap; }

/* ============ Conditions ============ */
.page-lead { font-size: 17px; color: var(--text-muted); margin-bottom: var(--space-10); max-width: 640px; line-height: 1.7; }
.condition-card h3 { font-size: 19px; margin-bottom: var(--space-2); }
.condition-card p { font-size: 15px; color: var(--text-body); line-height: 1.7; margin: 0; }

/* ============ Insurance ============ */
.insurance-note { margin-top: 20px; font-size: 15px; color: var(--text-muted); line-height: 1.7; }

/* ============ FAQ ============ */
.faq-item { cursor: pointer; }
.faq-row { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.faq-question { font-weight: 600; font-size: 16px; color: var(--text-heading); }
.faq-symbol { font-size: 18px; color: var(--teal-600); }
.faq-answer { font-size: 15px; color: var(--text-body); line-height: 1.7; margin-top: var(--space-3); }

/* ============ Scheduling ============ */
.sched-card { display: flex; flex-direction: column; }
.sched-card h2 { font-size: 22px; margin-bottom: var(--space-3); }
.sched-bullets { display: flex; flex-direction: column; gap: var(--space-2); font-size: 15px; color: var(--text-body); line-height: 1.6; margin-bottom: var(--space-5); flex: 1; }
.sched-desc { font-size: 15px; color: var(--text-body); line-height: 1.7; margin-bottom: var(--space-5); flex: 1; }
.sched-note { margin-top: var(--space-8); font-size: 15px; color: var(--text-muted); line-height: 1.7; }

/* ============ Footer ============ */
.site-footer { background: var(--navy-950); color: var(--paper-0); padding: 48px 40px; margin-top: 80px; }
.footer-inner { max-width: var(--content-max-width); margin: 0 auto; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 32px; }
.footer-brand { font-family: var(--font-display); font-size: 22px; font-weight: 600; }
.footer-role { font-family: var(--font-body); font-size: 13px; color: var(--teal-400); text-transform: uppercase; letter-spacing: var(--tracking-wider); margin-top: 2px; }
.footer-credentials { font-family: var(--font-mono); font-size: 13px; color: var(--stone-300); margin-top: 12px; line-height: 1.8; }
.footer-desc { font-family: var(--font-body); font-size: 14px; color: var(--stone-300); max-width: 320px; line-height: 1.7; }

/* ============ Pages / routing ============ */
.page { display: none; }
.page.is-active { display: block; }

/* ============ Responsive ============ */
@media (max-width: 720px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .hero h1 { font-size: 34px; }
  .site-header { padding: 14px 20px; }
  .container, .container-narrow { padding: 48px 20px; }
}