/* ============================================
   ResumePro Landing Page — Design System
   Jony Ive-influenced: restrained, honest, considered
   ============================================ */

/* --- Design Tokens --- */
:root {
  /* Colors — restrained palette */
  --color-bg: #ffffff;
  --color-text: #1e1e2d;
  --color-text-muted: #6c757d;
  --color-brand: #dc3545;
  --color-brand-hover: #c82333;
  --color-surface: #f8f9fa;
  --color-border: #e9ecef;
  --color-shadow: rgba(0, 0, 0, 0.08);
  --color-shadow-hover: rgba(0, 0, 0, 0.14);

  /* Typography — system fonts */
  --font-family: -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-h1: clamp(2rem, 5vw, 3.25rem);
  --font-h2: clamp(1.5rem, 3.5vw, 2.25rem);
  --font-h3: clamp(1.125rem, 2vw, 1.375rem);
  --font-body: clamp(1rem, 1.5vw, 1.125rem);
  --font-small: 0.875rem;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Spacing — generous, considered */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 5rem;
  --space-section: clamp(4rem, 8vw, 6.25rem);

  /* Layout */
  --max-width: 1120px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --transition: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-body);
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

/* --- Utilities --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* --- Scroll Animation --- */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  font-size: var(--font-body);
  font-weight: var(--font-weight-semibold);
  font-family: var(--font-family);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
  border: 2px solid transparent;
  text-align: center;
  line-height: 1.2;
}

.btn-primary {
  background: var(--color-brand);
  color: #fff;
  border-color: var(--color-brand);
}

.btn-primary:hover {
  background: var(--color-brand-hover);
  border-color: var(--color-brand-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(220, 53, 69, 0.3);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-ghost:hover {
  border-color: var(--color-text);
  transform: translateY(-1px);
}

.btn-white {
  background: #fff;
  color: var(--color-brand);
  border-color: #fff;
}

.btn-white:hover {
  background: var(--color-surface);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* ============================================
   Navigation
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition);
}

.nav.scrolled {
  box-shadow: 0 2px 12px var(--color-shadow);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.nav-logo span {
  color: var(--color-brand);
}

.nav-links {
  display: none;
  list-style: none;
  gap: var(--space-lg);
  align-items: center;
}

.nav-links a {
  font-size: var(--font-small);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
  transition: color var(--transition);
}

.nav-links a:hover {
  color: var(--color-text);
}

.nav-links .btn-primary {
  color: #fff;
}

.nav-links .btn {
  padding: 0.5rem 1.25rem;
  font-size: var(--font-small);
}

.nav-hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-hamburger.active span:nth-child(2) {
  opacity: 0;
}

.nav-hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile nav menu */
.nav-mobile {
  display: none;
  position: absolute;
  top: 64px;
  left: 0;
  right: 0;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 4px 12px var(--color-shadow);
  padding: var(--space-md);
}

.nav-mobile.open {
  display: block;
}

.nav-mobile a {
  display: block;
  padding: 0.75rem 0;
  font-size: var(--font-body);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
}

.nav-mobile a:last-child {
  border-bottom: none;
  padding-top: var(--space-sm);
}

.nav-mobile-cta {
  margin-top: 0.5rem;
  text-align: center;
  color: #fff;
}

/* ============================================
   Hero
   ============================================ */
.hero {
  padding-top: calc(64px + var(--space-2xl));
  padding-bottom: var(--space-section);
}

.hero-inner {
  display: grid;
  gap: var(--space-xl);
  align-items: center;
}

.hero-content {
  max-width: 560px;
}

.hero h1 {
  font-size: var(--font-h1);
  font-weight: var(--font-weight-bold);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-md);
  color: var(--color-text);
}

.hero-sub {
  font-size: var(--font-body);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
  max-width: 480px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.hero-trust {
  font-size: var(--font-small);
  color: var(--color-text-muted);
}

/* Browser mockup */
.hero-visual {
  display: none;
}

.browser-frame {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 32px var(--color-shadow-hover);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.browser-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 16px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.browser-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-border);
}

.browser-dot:nth-child(1) { background: #ff5f57; }
.browser-dot:nth-child(2) { background: #ffbd2e; }
.browser-dot:nth-child(3) { background: #28c840; }

.browser-url {
  flex: 1;
  margin-left: 8px;
  padding: 4px 12px;
  background: var(--color-bg);
  border-radius: 4px;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.browser-body {
  padding: var(--space-lg);
  min-height: 240px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
}

.browser-body-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: #fff3f3;
  color: var(--color-brand);
  border-radius: 20px;
  font-size: var(--font-small);
  font-weight: var(--font-weight-semibold);
}

.browser-body-text {
  font-size: var(--font-small);
  color: var(--color-text-muted);
  text-align: center;
  line-height: 1.6;
}

.browser-body-score {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1.25rem;
  background: #e8f5e9;
  color: #2e7d32;
  border-radius: 20px;
  font-size: var(--font-small);
  font-weight: var(--font-weight-bold);
}

/* ============================================
   Section — shared
   ============================================ */
.section {
  padding: var(--space-section) 0;
}

.section-alt {
  background: var(--color-surface);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-xl);
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

.section-header h2 {
  font-size: var(--font-h2);
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-xs);
}

.section-header p {
  color: var(--color-text-muted);
  font-size: var(--font-body);
}

/* ============================================
   How It Works — 3 steps
   ============================================ */
.steps-grid {
  display: grid;
  gap: var(--space-lg);
}

.step-card {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: 0 2px 12px var(--color-shadow);
  text-align: center;
  transition: box-shadow var(--transition), transform var(--transition);
  position: relative;
}

.step-card:hover {
  box-shadow: 0 4px 20px var(--color-shadow-hover);
  transform: translateY(-2px);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-brand);
  color: #fff;
  font-size: 1.125rem;
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-sm);
}

.step-card h3 {
  font-size: var(--font-h3);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-xs);
}

.step-card p {
  color: var(--color-text-muted);
  font-size: var(--font-small);
  line-height: 1.6;
}

/* Connector (desktop only) */
.step-connector {
  display: none;
}

/* ============================================
   Install Guide
   ============================================ */
.install-steps {
  max-width: 640px;
  margin: 0 auto;
}

.install-step {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
}

.install-step:last-child {
  border-bottom: none;
}

.install-step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  min-width: 36px;
  border-radius: 50%;
  background: var(--color-brand);
  color: #fff;
  font-size: 1rem;
  font-weight: var(--font-weight-bold);
}

.install-step-content h3 {
  font-size: var(--font-body);
  font-weight: var(--font-weight-semibold);
  margin-bottom: 0.25rem;
}

.install-step-content p {
  font-size: var(--font-small);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.install-step-content a {
  color: var(--color-brand);
  font-weight: var(--font-weight-medium);
}

.install-step-content a:hover {
  text-decoration: underline;
}

.install-tip {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  max-width: 640px;
  margin: var(--space-lg) auto 0;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  font-size: var(--font-small);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.install-tip svg {
  flex-shrink: 0;
  margin-top: 2px;
  stroke: var(--color-text-muted);
}

.install-tip p {
  margin: 0;
}

/* ============================================
   Features — 4 cards
   ============================================ */
.features-grid {
  display: grid;
  gap: var(--space-lg);
}

.feature-card {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: 0 2px 12px var(--color-shadow);
  transition: box-shadow var(--transition), transform var(--transition);
}

.feature-card:hover {
  box-shadow: 0 4px 20px var(--color-shadow-hover);
  transform: translateY(-2px);
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: #fff3f3;
  margin-bottom: var(--space-sm);
}

.feature-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-brand);
  stroke-width: 2;
  fill: none;
}

.feature-card h3 {
  font-size: var(--font-h3);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-xs);
}

.feature-card p {
  color: var(--color-text-muted);
  font-size: var(--font-small);
  line-height: 1.6;
}

/* ============================================
   Pricing — 2 cards
   ============================================ */
.pricing-grid {
  display: grid;
  gap: var(--space-lg);
  max-width: 960px;
  margin: 0 auto;
}

.pricing-loading {
  text-align: center;
  color: var(--color-text-muted);
  padding: var(--space-xl);
  grid-column: 1 / -1;
}

.pricing-card {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  box-shadow: 0 2px 12px var(--color-shadow);
  text-align: center;
  border: 2px solid transparent;
  transition: box-shadow var(--transition), transform var(--transition);
  position: relative;
}

.pricing-card:hover {
  box-shadow: 0 4px 20px var(--color-shadow-hover);
  transform: translateY(-2px);
}

.pricing-card.featured {
  border-color: var(--color-brand);
}

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-brand);
  color: #fff;
  font-size: 0.75rem;
  font-weight: var(--font-weight-bold);
  padding: 4px 16px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pricing-plan {
  font-size: var(--font-h3);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-xs);
}

.pricing-price {
  font-size: 2.5rem;
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.03em;
  margin-bottom: 0.25rem;
}

.pricing-price span {
  font-size: var(--font-body);
  font-weight: var(--font-weight-normal);
  color: var(--color-text-muted);
}

.pricing-desc {
  color: var(--color-text-muted);
  font-size: var(--font-small);
  margin-bottom: var(--space-md);
}

.pricing-features {
  list-style: none;
  text-align: left;
  margin-bottom: var(--space-lg);
}

.pricing-features li {
  padding: 0.5rem 0;
  font-size: var(--font-small);
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.pricing-features li svg {
  width: 18px;
  height: 18px;
  stroke: var(--color-brand);
  stroke-width: 2.5;
  fill: none;
  flex-shrink: 0;
}

.pricing-card .btn {
  width: 100%;
  justify-content: center;
}

/* ============================================
   Contact Form
   ============================================ */
.contact-form {
  max-width: 640px;
  margin: 0 auto;
}

.form-row {
  display: grid;
  gap: var(--space-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  margin-bottom: var(--space-md);
}

.form-group label {
  font-size: var(--font-small);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
}

.form-group input,
.form-group textarea {
  padding: 0.75rem 1rem;
  font-size: var(--font-body);
  font-family: var(--font-family);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-brand);
  box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.contact-status {
  margin-top: var(--space-sm);
  font-size: var(--font-small);
  min-height: 1.5em;
}

.contact-status.success {
  color: #2e7d32;
}

.contact-status.error {
  color: var(--color-brand);
}

@media (min-width: 768px) {
  .form-row {
    grid-template-columns: 1fr 1fr;
  }
}

/* ============================================
   Final CTA
   ============================================ */
.cta-section {
  background: var(--color-brand);
  padding: var(--space-section) 0;
  text-align: center;
}

.cta-section h2 {
  font-size: var(--font-h2);
  font-weight: var(--font-weight-bold);
  color: #fff;
  margin-bottom: var(--space-sm);
  letter-spacing: -0.02em;
}

.cta-section p {
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: var(--space-lg);
  font-size: var(--font-body);
}

/* ============================================
   Footer
   ============================================ */
.footer {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--color-border);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  text-align: center;
}

.footer-brand {
  font-size: 1.125rem;
  font-weight: var(--font-weight-bold);
}

.footer-brand span {
  color: var(--color-brand);
}

.footer-links {
  display: flex;
  gap: var(--space-md);
  list-style: none;
}

.footer-links a {
  font-size: var(--font-small);
  color: var(--color-text-muted);
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--color-text);
}

.footer-copy {
  font-size: var(--font-small);
  color: var(--color-text-muted);
}

/* ============================================
   Responsive — Tablet (768px+)
   ============================================ */
@media (min-width: 768px) {
  .steps-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    align-items: start;
    position: relative;
  }

  /* Dashed connectors between steps */
  .step-connector {
    display: block;
    position: absolute;
    top: 52px;
    width: calc(33.33% - 40px);
    height: 2px;
    border-top: 2px dashed var(--color-border);
  }

  .step-connector:first-of-type {
    left: calc(16.66% + 20px);
  }

  .step-connector:last-of-type {
    left: calc(50% + 20px);
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pricing-grid {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  }

  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
  }
}

/* ============================================
   Responsive — Desktop (1024px+)
   ============================================ */
@media (min-width: 1024px) {
  .nav-links {
    display: flex;
  }

  .nav-hamburger {
    display: none;
  }

  .hero-inner {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
  }

  .hero-visual {
    display: block;
  }

  .features-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
  }
}