/* ===================================
   THAGA — Calculadora de Pace
   style.css
   =================================== */

:root {
  --blue: #267cc1;
  --blue-dark: #1a5a99;
  --blue-light: #9fe4f4;
  --orange: #ef7610;
  --orange-dark: #c85e06;
  --yellow: #efbb40;
  --dark: #141414;
  --dark-2: #1e1e1e;
  --dark-3: #242424;
  --gray: #7b7b7b;
  --gray-light: #aaa;
  --light: #f5f5f5;
  --white: #ffffff;
  --bg: #0d0d0d;

  --font-display: 'Barlow Condensed', sans-serif;
  --font-body: 'Barlow', sans-serif;

  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--white);
  overflow-x: hidden;
  line-height: 1.6;
}

/* ===== UTILS ===== */
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 8px;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn--large {
  padding: 16px 40px;
  font-size: 1.1rem;
}

.btn--orange {
  background: var(--orange);
  color: var(--white);
  border-color: var(--orange);
}
.btn--orange:hover {
  background: var(--orange-dark);
  border-color: var(--orange-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(239, 118, 16, 0.4);
}

.btn--blue {
  background: var(--blue);
  color: var(--white);
  border-color: var(--blue);
  width: 100%;
}
.btn--blue:hover {
  background: var(--blue-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(38, 124, 193, 0.4);
}

.btn--ghost {
  background: transparent;
  color: rgba(255,255,255,0.6);
  border-color: rgba(255,255,255,0.15);
}
.btn--ghost:hover {
  border-color: rgba(255,255,255,0.4);
  color: var(--white);
}

.btn--nav {
  padding: 10px 22px;
  font-size: 0.875rem;
  background: var(--orange);
  color: var(--white);
  border-color: var(--orange);
}

/* ===== SECTION TAGS ===== */
.section-tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--orange);
  border: 1px solid var(--orange);
  padding: 4px 14px;
  border-radius: 100px;
  margin-bottom: 16px;
}

.section-tag--blue {
  color: var(--blue-light);
  border-color: var(--blue-light);
}

/* ===== NAV ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 32px;
  background: rgba(13,13,13,0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.nav__logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.nav__page-label {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  padding-left: 20px;
  border-left: 1px solid rgba(255,255,255,0.12);
  margin-left: 20px;
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 52vh;
  display: flex;
  align-items: center;
  background: var(--blue);
  overflow: hidden;
  padding: 120px 32px 64px;
}

.hero__bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 600px;
}

.hero__tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--yellow);
  margin-bottom: 16px;
  animation: fadeUp 0.5s ease both;
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 9vw, 6.5rem);
  font-weight: 900;
  line-height: 0.95;
  text-transform: uppercase;
  color: var(--white);
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  animation: fadeUp 0.5s 0.08s ease both;
}

.hero__title em {
  font-style: italic;
  color: var(--yellow);
}

.hero__sub {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.75);
  max-width: 440px;
  animation: fadeUp 0.5s 0.16s ease both;
}

.hero__deco {
  position: absolute;
  right: 60px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 1;
  text-align: right;
  pointer-events: none;
  animation: fadeUp 0.5s 0.24s ease both;
}

.deco-number {
  font-family: var(--font-display);
  font-size: clamp(5rem, 14vw, 10rem);
  font-weight: 900;
  color: rgba(255,255,255,0.08);
  line-height: 1;
  letter-spacing: -0.04em;
}

.deco-label {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: rgba(255,255,255,0.12);
  letter-spacing: 0.08em;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ===== SECTIONS ===== */
.section {
  padding: 80px 0;
}

.section--alt {
  background: var(--dark-2);
}

.section__header {
  text-align: center;
  margin-bottom: 48px;
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 900;
  line-height: 1.05;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  color: var(--white);
  margin-bottom: 12px;
}

.section__desc {
  color: rgba(255,255,255,0.5);
  font-size: 1rem;
}

/* ===== CALCULADORA CARD ===== */
.calc-card {
  background: var(--dark-2);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  padding: 48px;
  position: relative;
  overflow: hidden;
}

.calc-card::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(239,118,16,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.section--alt .calc-card {
  background: var(--dark-3);
}

/* ===== FIELDS GRID ===== */
.fields-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}

.field-wrap {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.field-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
  cursor: pointer;
}

.field-icon {
  font-size: 1rem;
}

.field-input-group {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,0.04);
  border: 2px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition);
}

.field-input-group:focus-within {
  border-color: var(--orange);
  background: rgba(239,118,16,0.05);
}

/* Estado "sendo calculado" */
.field-wrap.is-target .field-input-group {
  border-color: rgba(255,255,255,0.06);
  background: rgba(255,255,255,0.02);
}

.field-wrap.is-target .field-input {
  color: rgba(255,255,255,0.25);
}

.field-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  padding: 16px 20px;
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.02em;
  width: 0;
  min-width: 0;
}

.field-input::placeholder {
  color: rgba(255,255,255,0.2);
  font-weight: 400;
}

/* Remove number arrows */
.field-input[type="number"]::-webkit-outer-spin-button,
.field-input[type="number"]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.field-input[type="number"] { -moz-appearance: textfield; }

.field-unit {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.3);
  padding-right: 16px;
  white-space: nowrap;
  flex-shrink: 0;
}

.field-hint {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.25);
}

/* ===== PRESETS ===== */
.field-presets {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.preset {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 6px;
  color: rgba(255,255,255,0.5);
  padding: 5px 10px;
  cursor: pointer;
  transition: var(--transition);
}

.preset:hover {
  background: rgba(239,118,16,0.15);
  border-color: var(--orange);
  color: var(--orange);
}

/* ===== RESULT AREA ===== */
.result-area {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 32px;
  margin-bottom: 32px;
  min-height: 100px;
  display: flex;
  align-items: center;
}

.result-placeholder {
  display: flex;
  align-items: center;
  gap: 12px;
  color: rgba(255,255,255,0.2);
  font-size: 0.95rem;
}

.result-placeholder__icon {
  font-size: 1.5rem;
  opacity: 0.4;
}

/* RESULTADO REAL */
.result-display {
  display: flex;
  align-items: center;
  gap: 32px;
  width: 100%;
  animation: resultIn 0.3s ease both;
}

@keyframes resultIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.result-display__label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.35);
  margin-bottom: 4px;
}

.result-display__value {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 900;
  color: var(--orange);
  line-height: 1;
  letter-spacing: -0.02em;
}

.result-display__unit {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: rgba(255,255,255,0.3);
  margin-top: 4px;
}

.result-display__badge {
  background: rgba(239,118,16,0.12);
  border: 1px solid rgba(239,118,16,0.25);
  border-radius: var(--radius);
  padding: 20px 32px;
  flex-shrink: 0;
}

.result-display__context {
  flex: 1;
}

.result-context__item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
  margin-bottom: 6px;
}

.result-context__item strong {
  color: rgba(255,255,255,0.7);
}

/* ERRO */
.result-error {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #f87171;
  font-size: 0.95rem;
  animation: resultIn 0.2s ease both;
}

/* ===== CALC ACTIONS ===== */
.calc-actions {
  display: flex;
  gap: 12px;
}

/* ===== CONVERSOR ===== */
.conversor-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 48px;
}

.conversor-card {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.conversor-card__header {
  display: flex;
  align-items: center;
  gap: 12px;
}

.conversor-card__icon {
  font-size: 1.5rem;
}

.conversor-card__title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--white);
}

.conversor-result {
  text-align: center;
  padding: 20px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.conversor-result__empty {
  color: rgba(255,255,255,0.15);
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
}

.conversor-result__value {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 900;
  color: var(--blue-light);
  letter-spacing: -0.02em;
  animation: resultIn 0.25s ease both;
}

.conversor-result__unit {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: rgba(255,255,255,0.3);
  margin-left: 6px;
}

/* ===== TABELA DE REFERÊNCIA ===== */
.ref-table-wrap {
  margin-top: 8px;
}

.ref-table__title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.35);
  margin-bottom: 16px;
  text-align: center;
}

.ref-table {
  background: var(--dark);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  overflow: hidden;
}

.ref-table__header {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  background: rgba(255,255,255,0.04);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.ref-table__header span {
  padding: 12px 20px;
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.3);
}

.ref-table__body {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
}

.ref-row {
  display: contents;
}

.ref-row span {
  padding: 10px 20px;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  color: rgba(255,255,255,0.65);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.ref-row span:nth-child(odd) {
  color: var(--orange);
  font-weight: 700;
}

.ref-row:hover span {
  background: rgba(255,255,255,0.03);
  color: var(--white);
}

/* ===== CTA SECTION ===== */
.cta-section {
  background: var(--orange);
  padding: 80px 24px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section__tracks {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding-bottom: 20px;
  pointer-events: none;
}

.track-line {
  height: 4px;
  background: rgba(255,255,255,0.15);
  margin-bottom: 14px;
  transform: skewY(-3deg);
}

.cta-section .container {
  position: relative;
  z-index: 1;
}

.cta-section__eyebrow {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.7);
  margin-bottom: 12px;
  text-transform: uppercase;
}

.cta-section__title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 7vw, 5rem);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  color: var(--white);
  line-height: 1;
  margin-bottom: 32px;
}

.cta-section__title em {
  font-style: italic;
  color: var(--yellow);
}

/* ===== FOOTER ===== */
.footer {
  background: var(--bg);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 24px;
  text-align: center;
}

.footer__copy {
  font-size: 0.8rem;
  color: var(--gray);
}

.footer__copy a {
  color: var(--blue-light);
  text-decoration: none;
}

.footer__copy a:hover {
  text-decoration: underline;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .nav__page-label {
    display: none;
  }

  .hero {
    padding: 100px 24px 48px;
    min-height: auto;
  }

  .hero__deco {
    display: none;
  }

  .calc-card {
    padding: 28px 20px;
  }

  .fields-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .conversor-wrap {
    grid-template-columns: 1fr;
  }

  .calc-actions {
    flex-direction: column;
  }

  .calc-actions .btn {
    width: 100%;
  }

  .result-display {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .result-display__badge {
    width: 100%;
    text-align: center;
  }

  .ref-table__header,
  .ref-table__body {
    grid-template-columns: 1fr 1fr 1fr 1fr;
  }

  .ref-row span,
  .ref-table__header span {
    padding: 10px 12px;
    font-size: 0.85rem;
  }

  .section {
    padding: 56px 0;
  }
}

@media (max-width: 480px) {
  .hero__title {
    font-size: 3rem;
  }

  .ref-table__header,
  .ref-table__body {
    grid-template-columns: 1fr 1fr 1fr 1fr;
  }

  .ref-row span,
  .ref-table__header span {
    padding: 8px;
    font-size: 0.78rem;
  }
}