/* ==========================================================================
   171mails Modern Design System
   ========================================================================== */

:root {
  /* Color Palette - 171mails Modern Light Design System */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --bg-card: #ffffff;
  --bg-card-hover: #ffffff;
  --border-subtle: #e2e8f0;
  --border-hover: rgba(247, 104, 10, 0.4);

  --text-main: #0f172a;
  --text-muted: #475569;
  --text-subtle: #64748b;

  --primary: #f7680a;
  --primary-hover: #ea580c;
  --primary-glow: rgba(247, 104, 10, 0.25);
  --secondary: #ff8533;
  --brand-charcoal: #2e3338;
  --accent-cyan: #0284c7;
  --accent-emerald: #059669;
  --accent-amber: #d97706;
  --accent-pink: #db2777;

  --gradient-brand: linear-gradient(135deg, #f7680a 0%, #ff8533 50%, #ea580c 100%);
  --gradient-card: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  --gradient-glow: radial-gradient(circle at 50% 0%, rgba(247, 104, 10, 0.08) 0%, transparent 70%);

  /* Typography */
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Spacing & Radii */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.06), 0 1px 2px 0 rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 14px -2px rgba(0, 0, 0, 0.06), 0 2px 6px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 25px -3px rgba(0, 0, 0, 0.07), 0 4px 10px -2px rgba(0, 0, 0, 0.03);
  --shadow-glow: 0 4px 20px rgba(247, 104, 10, 0.15);
  --transition: all 0.25s 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;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img, svg {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

ul {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-main);
  font-weight: 700;
  line-height: 1.2;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transition: var(--transition);
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0.9rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo img {
  height: 38px;
  width: auto;
  object-fit: contain;
}

.desktop-nav {
  display: flex;
  align-items: center;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-item {
  position: relative;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-muted);
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 0.25rem;
  transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
  color: #fff;
}

.caret-icon {
  font-size: 0.7rem;
  transition: transform 0.2s ease;
}

.has-dropdown:hover .caret-icon {
  transform: rotate(180deg);
}

/* Dropdown Menus */
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: -20px;
  min-width: 280px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.75rem;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition);
  z-index: 100;
}

.mega-menu {
  min-width: 580px;
  left: -120px;
}

.has-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.5rem;
}

.dropdown-card {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.dropdown-card:hover {
  background: rgba(0, 0, 0, 0.03);
}

.dropdown-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

.bg-indigo, .bg-orange { background: rgba(247, 104, 10, 0.15); color: #ff8533; }
.bg-purple { background: rgba(234, 88, 12, 0.15); color: #f7680a; }
.bg-pink { background: rgba(236, 72, 153, 0.15); color: #f472b6; }
.bg-emerald { background: rgba(16, 185, 129, 0.15); color: #34d399; }
.bg-amber { background: rgba(245, 158, 11, 0.15); color: #fbbf24; }
.bg-blue { background: rgba(59, 130, 246, 0.15); color: #60a5fa; }

.dropdown-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.15rem;
}

.dropdown-desc {
  font-size: 0.78rem;
  color: var(--text-subtle);
  line-height: 1.35;
}

.dropdown-card-simple {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.dropdown-card-simple:hover {
  background: rgba(255, 255, 255, 0.05);
}

.view-all-link {
  border-top: 1px solid var(--border-subtle);
  margin-top: 0.4rem;
  padding-top: 0.75rem;
}

/* Nav Actions */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-size: 0.92rem;
  font-weight: 600;
  padding: 0.65rem 1.35rem;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-brand);
  color: #fff;
  box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(247, 104, 10, 0.5);
  color: #fff;
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-main);
  border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

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

.btn-ghost:hover {
  color: #fff;
}

.btn-lg {
  padding: 0.85rem 2rem;
  font-size: 1.05rem;
}

.btn-block {
  width: 100%;
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.mobile-toggle .bar {
  width: 22px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: var(--transition);
}

.mobile-drawer {
  display: none;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero-section {
  position: relative;
  padding: 5.5rem 1.5rem 4rem;
  background: radial-gradient(circle at 50% 0%, rgba(247, 104, 10, 0.06) 0%, transparent 60%), linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
  overflow: hidden;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 2;
}

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(247, 104, 10, 0.08);
  border: 1px solid rgba(247, 104, 10, 0.2);
  padding: 0.35rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 600;
  color: #ea580c;
  margin-bottom: 1.5rem;
}

.badge-dot {
  width: 8px;
  height: 8px;
  background: var(--accent-emerald);
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 8px var(--accent-emerald);
}

.hero-title {
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
  max-width: 950px;
  margin-inline: auto;
}

.gradient-text {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-muted);
  max-width: 760px;
  margin: 0 auto 2.5rem;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 3.5rem;
}

.hero-trust {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  font-size: 0.88rem;
  color: var(--text-subtle);
  border-top: 1px solid var(--border-subtle);
  padding-top: 2rem;
}

.hero-trust-item {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.hero-trust-item i {
  color: var(--accent-emerald);
}

/* ==========================================================================
   Section Layouts & Cards
   ========================================================================== */

.section {
  padding: 5rem 1.5rem;
  position: relative;
}

.section-container {
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3.5rem;
}

.section-tag {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--primary);
  margin-bottom: 0.5rem;
  display: inline-block;
}

.section-title {
  font-size: clamp(1.85rem, 3.5vw, 2.75rem);
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 1.05rem;
}

/* Two Primary Solutions Showcase */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-bottom: 3rem;
}

.solution-card {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
  transition: var(--transition);
}

.solution-card:hover {
  transform: translateY(-4px);
  border-color: rgba(247, 104, 10, 0.4);
  box-shadow: 0 12px 30px rgba(247, 104, 10, 0.12);
}

.solution-badge {
  position: absolute;
  top: 1.75rem;
  right: 1.75rem;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #34d399;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
}

.solution-icon-wrap {
  width: 58px;
  height: 58px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 1.5rem;
}

.solution-title {
  font-size: 1.65rem;
  margin-bottom: 0.75rem;
}

.solution-desc {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

.feature-list {
  margin-bottom: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.feature-list-item {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.92rem;
  color: var(--text-muted);
}

.feature-list-item i {
  color: var(--accent-emerald);
  font-size: 0.85rem;
}

.solution-price {
  margin-top: auto;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.price-tag {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--text-main);
  font-family: var(--font-heading);
}

.price-sub {
  font-size: 0.8rem;
  color: var(--text-subtle);
  font-weight: 400;
}

/* Feature Grid 4-col */
.features-4col {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.feature-box {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  text-align: center;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.02);
  transition: var(--transition);
}

.feature-box:hover {
  border-color: rgba(247, 104, 10, 0.4);
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(247, 104, 10, 0.08);
}

.feature-box-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 1.25rem;
}

.feature-box-title {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.feature-box-desc {
  font-size: 0.86rem;
  color: var(--text-muted);
}

/* Alternatives Table */
.comparison-table-wrap {
  overflow-x: auto;
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.comparison-table th, .comparison-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
}

.comparison-table th {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  color: var(--text-subtle);
  font-weight: 600;
}

.comparison-table th.highlight-col, .comparison-table td.highlight-col {
  background: rgba(247, 104, 10, 0.05);
  color: var(--primary);
  font-weight: 700;
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

/* FAQ Accordion */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
  transition: var(--transition);
}

.faq-question {
  width: 100%;
  padding: 1.25rem 1.5rem;
  background: none;
  border: none;
  text-align: left;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.faq-icon {
  font-size: 0.9rem;
  transition: transform 0.25s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 1.5rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 400px;
  padding-bottom: 1.25rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  background: #f8fafc;
  border-top: 1px solid var(--border-subtle);
  padding: 4rem 1.5rem 2rem;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-cta-card {
  background: var(--gradient-brand);
  border-radius: var(--radius-lg);
  padding: 3rem 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 4rem;
  box-shadow: var(--shadow-glow);
}

.footer-cta-title {
  font-size: 1.85rem;
  color: #fff;
  margin-bottom: 0.4rem;
}

.footer-cta-subtitle {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1rem;
}

.footer-cta-card .btn-primary {
  background: #fff;
  color: #0b0f19;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.footer-cta-card .btn-primary:hover {
  background: #f1f5f9;
  transform: translateY(-2px);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.brand-col .footer-logo img {
  height: 38px;
  margin-bottom: 1.25rem;
}

.brand-desc {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.footer-socials {
  display: flex;
  gap: 0.85rem;
  margin-bottom: 1.25rem;
}

.footer-socials a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-socials a:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.deliverability-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-subtle);
}

.footer-heading {
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-main);
  margin-bottom: 1.25rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-links a {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.footer-links a:hover {
  color: var(--primary);
  transform: translateX(3px);
}

.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.82rem;
  color: var(--text-subtle);
}

.footer-bottom-links {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

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

/* ==========================================================================
   Page Specific & Content Elements (Articles, Forms, Breadcrumbs)
   ========================================================================== */

.page-header {
  padding: 4.5rem 1.5rem 3rem;
  background: var(--gradient-glow);
  text-align: center;
  border-bottom: 1px solid var(--border-subtle);
}

.page-header-title {
  font-size: clamp(2.2rem, 4vw, 3.25rem);
  margin-bottom: 0.75rem;
}

.page-header-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto;
}

.content-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 3rem;
  max-width: 900px;
  margin: 0 auto;
}

.prose h2 {
  font-size: 1.65rem;
  margin: 2rem 0 0.85rem;
}

.prose h3 {
  font-size: 1.3rem;
  margin: 1.5rem 0 0.65rem;
}

.prose p {
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  line-height: 1.75;
}

.prose ul, .prose ol {
  margin: 1rem 0 1.5rem 1.5rem;
  color: var(--text-muted);
}

.prose li {
  margin-bottom: 0.5rem;
}

/* Form controls */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--text-main);
}

.form-input, .form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition);
}

.form-input:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(247, 104, 10, 0.25);
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */

@media (max-width: 1024px) {
  .solutions-grid {
    grid-template-columns: 1fr;
  }
  .features-4col {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .mega-menu {
    min-width: 480px;
    left: -200px;
  }
}

@media (max-width: 768px) {
  .desktop-nav, .nav-actions .btn {
    display: none;
  }
  .mobile-toggle {
    display: flex;
  }
  .mobile-drawer {
    display: block;
    position: fixed;
    top: 65px;
    left: 0;
    width: 100%;
    height: calc(100vh - 65px);
    background: #ffffff;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    overflow-y: auto;
    z-index: 999;
    padding: 1.5rem;
  }
  .mobile-drawer.open {
    transform: translateX(0);
  }
  .mobile-menu-section {
    margin-bottom: 1.5rem;
  }
  .mobile-menu-title {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-subtle);
    margin-bottom: 0.75rem;
  }
  .mobile-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 0;
    font-size: 1rem;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-subtle);
  }
  .mobile-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 1.5rem;
  }
  .features-4col {
    grid-template-columns: 1fr;
  }
  .footer-cta-card {
    flex-direction: column;
    text-align: center;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .content-card {
    padding: 1.75rem;
  }
}