/* =============================================
   Cold Email Hub - Main Stylesheet
   Color Scheme: #87f4ab (mint) + #193366 (navy)
   ============================================= */

/* ===== CSS VARIABLES ===== */
:root {
  --primary-color: #91E495;
  --secondary-color: #193366;
  --bg-white: #ffffff;
  --bg-light: #f8f9fa;
  --accent-light: #e0f7e9;
  --text-primary: #193366;
  --text-secondary: #5a6c7d;
  --success: #91E495;
  --warning: #ffd93d;
  --error: #ff6b6b;
  --border-color: #e0e0e0;
  
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.12);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.16);
}

/* ===== RESET & BASE STYLES ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-white);
  overflow-x: hidden;
}

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

a {
  text-decoration: none;
  color: var(--primary-color);
  transition: all 0.3s ease;
}

a:hover {
  color: var(--secondary-color);
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h1 {
  font-size: 32px;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 20px;
  font-weight: 600;
}

h4 {
  font-size: 18px;
  font-weight: 600;
}

p {
  margin-bottom: 1em;
  color: var(--text-secondary);
}

/* Desktop typography */
@media (min-width: 768px) {
  h1 {
    font-size: 48px;
  }
  
  h2 {
    font-size: 36px;
  }
  
  h3 {
    font-size: 28px;
  }
  
  h4 {
    font-size: 22px;
  }
}

/* ===== LAYOUT CONTAINERS ===== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-xl) 0;
}

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

/* ===== NAVIGATION ===== */
.nav {
  background: var(--bg-white);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: all 0.3s ease;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md);
  max-width: 1200px;
  margin: 0 auto;
}

.nav-logo {
  font-size: 24px;
  font-weight: 700;
  color: var(--secondary-color);
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-menu {
  display: none;
  list-style: none;
  gap: var(--spacing-md);
  margin: 0;
}

.nav-menu li a {
  color: var(--text-primary);
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: all 0.3s ease;
}

.nav-menu li a:hover,
.nav-menu li a.active {
  background-color: var(--accent-light);
  color: var(--secondary-color);
}

.nav-toggle {
  display: block;
  background: none;
  border: none;
  font-size: 28px;
  cursor: pointer;
  color: var(--secondary-color);
}

/* Mobile menu */
.nav-menu.active {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--bg-white);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-md);
  gap: 0;
}

.nav-menu.active li {
  width: 100%;
}

.nav-menu.active li a {
  display: block;
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
}

@media (min-width: 768px) {
  .nav-menu {
    display: flex;
  }
  
  .nav-toggle {
    display: none;
  }
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 16px;
  text-align: center;
  cursor: pointer;
  border: none;
  transition: all 0.3s ease;
  min-height: 44px;
}

.btn-primary {
  background-color: var(--primary-color);
  color: var(--secondary-color);
}

.btn-primary:hover {
  background-color: #7dd889;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background-color: var(--secondary-color);
  color: var(--bg-white);
}

.btn-secondary:hover {
  background-color: #0f2347;
  color: #91E495;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background-color: transparent;
  color: var(--secondary-color);
  border: 2px solid var(--secondary-color);
}

.btn-outline:hover {
  background-color: var(--secondary-color);
  color: var(--bg-white);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 14px;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 18px;
}

/* ===== CARDS ===== */
.card {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-md);
  transition: all 0.3s ease;
  height: 100%;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.card-header {
  margin-bottom: var(--spacing-md);
}

.card-body {
  margin-bottom: var(--spacing-md);
}

.card-footer {
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-color);
}

/* ===== GRID SYSTEM ===== */
.grid {
  display: grid;
  gap: var(--spacing-md);
  grid-template-columns: 1fr;
}

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

@media (min-width: 768px) {
  .grid-md-3 {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .grid-md-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 767px) {
  .grid-2 {
    grid-template-columns: 1fr;
  }
}

/* ===== FORMS ===== */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--text-primary);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-family: inherit;
  transition: all 0.3s ease;
  min-height: 44px;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(135, 244, 171, 0.2);
}

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

.form-error {
  color: var(--error);
  font-size: 14px;
  margin-top: 4px;
}

.form-success {
  color: var(--success);
  font-size: 14px;
  margin-top: 4px;
}

/* ===== BADGES & TAGS ===== */
.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
  background-color: var(--accent-light);
  color: var(--secondary-color);
}

.badge-primary {
  background-color: var(--primary-color);
  color: var(--secondary-color);
}

.badge-secondary {
  background-color: var(--secondary-color);
  color: var(--bg-white);
}

.badge-success {
  background-color: var(--success);
  color: var(--secondary-color);
}

.badge-warning {
  background-color: var(--warning);
  color: var(--secondary-color);
}

.badge-error {
  background-color: var(--error);
  color: var(--bg-white);
}

/* ===== HERO SECTION ===== */
.hero {
  padding: var(--spacing-xl) 0;
  text-align: center;
  background: linear-gradient(135deg, var(--accent-light) 0%, var(--bg-white) 100%);
}

.hero-title {
  margin-bottom: var(--spacing-md);
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--spacing-lg);
}

.hero-stats {
  display: flex;
  gap: var(--spacing-lg);
  justify-content: center;
  flex-wrap: wrap;
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: var(--spacing-lg);
}

.hero-stats span {
  font-weight: 600;
  color: var(--secondary-color);
}

/* ===== EMAIL CAPTURE ===== */
.email-capture {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-lg);
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.email-capture h3 {
  margin-bottom: var(--spacing-md);
}

.email-capture p {
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
}

.email-form {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.email-form .form-input {
  flex: 1;
}

.email-privacy {
  font-size: 12px;
  color: var(--text-secondary);
}

@media (max-width: 767px) {
  .email-form {
    flex-direction: column;
  }
}

/* ===== VALUE PROPS ===== */
.value-props {
  display: grid;
  gap: var(--spacing-md);
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.value-prop-card {
  text-align: center;
  padding: var(--spacing-lg);
}

.value-prop-icon {
  font-size: 48px;
  margin-bottom: var(--spacing-md);
}

.value-prop-card h3 {
  font-size: 20px;
  margin-bottom: var(--spacing-md);
}

/* ===== DIRECTORY STYLES ===== */
.directory-header {
  margin-bottom: var(--spacing-lg);
}

.search-bar {
  position: relative;
  margin-bottom: var(--spacing-md);
}

.search-bar .form-input {
  padding-left: 48px;
}

.search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  color: var(--text-secondary);
}

.filter-bar {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  margin-bottom: var(--spacing-md);
  align-items: center;
}

.filter-group {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 8px 16px;
  border: 2px solid var(--border-color);
  background: var(--bg-white);
  border-radius: 20px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.3s ease;
  color: var(--text-primary);
}

.filter-btn:hover,
.filter-btn.active {
  border-color: var(--primary-color);
  background-color: var(--primary-color);
  color: var(--secondary-color);
}

.sort-dropdown {
  margin-left: auto;
}

.tool-count {
  color: var(--text-secondary);
  font-size: 14px;
}

/* Tool Cards */
.tool-card {
  position: relative;
}

.tool-logo {
  width: 64px;
  height: 64px;
  background: var(--accent-light);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  margin-bottom: var(--spacing-md);
}

.tool-card h3 {
  font-size: 20px;
  margin-bottom: 8px;
}

.tool-description {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  min-height: 60px;
}

.tool-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
  flex-wrap: wrap;
  gap: 8px;
}

.tool-price {
  font-weight: 700;
  color: var(--secondary-color);
}

.tool-rating {
  color: var(--warning);
}

.tool-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: var(--spacing-md);
}

.compare-checkbox {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
}

/* ===== ACCORDION ===== */
.accordion-item {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  overflow: hidden;
}

.accordion-header {
  background: var(--bg-white);
  padding: var(--spacing-md);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  transition: all 0.3s ease;
}

.accordion-header:hover {
  background: var(--accent-light);
}

.accordion-icon {
  transition: transform 0.3s ease;
}

.accordion-item.active .accordion-icon {
  transform: rotate(180deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.accordion-item.active .accordion-content {
  max-height: 500px;
}

.accordion-body {
  padding: var(--spacing-md);
  background: var(--bg-light);
}

/* ===== TOOL PAGES ===== */
.tool-result {
  background: var(--bg-light);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.result-score {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.result-score.good {
  color: var(--success);
}

.result-score.warning {
  color: var(--warning);
}

.result-score.error {
  color: var(--error);
}

.result-item {
  padding: 8px 0;
  border-bottom: 1px solid var(--border-color);
}

.result-item:last-child {
  border-bottom: none;
}

.copy-btn {
  background: var(--secondary-color);
  color: var(--bg-white);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  font-size: 14px;
  transition: all 0.3s ease;
}

.copy-btn:hover {
  background: var(--primary-color);
  color: var(--secondary-color);
}

/* ===== FOOTER ===== */
.footer {
  background: var(--secondary-color);
  color: var(--bg-white);
  padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-grid {
  display: grid;
  gap: var(--spacing-lg);
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  margin-bottom: var(--spacing-lg);
}

.footer-column h4 {
  color: var(--bg-white);
  margin-bottom: var(--spacing-md);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 8px;
}

.footer-links a {
  color: var(--bg-white);
  opacity: 0.8;
  transition: all 0.3s ease;
}

.footer-links a:hover {
  opacity: 1;
  color: var(--primary-color);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

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

.social-links {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.social-link {
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.social-link:hover {
  background: var(--primary-color);
  color: var(--secondary-color);
}

/* ===== COMPARISON TABLE ===== */
.comparison-table {
  overflow-x: auto;
  margin-top: var(--spacing-lg);
}

.comparison-table table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-white);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.comparison-table th,
.comparison-table td {
  padding: var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.comparison-table th {
  background: var(--secondary-color);
  color: var(--bg-white);
  font-weight: 600;
}

.comparison-table tr:hover {
  background: var(--bg-light);
}

/* ===== UTILITY CLASSES ===== */
.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

.hidden {
  display: none;
}

.visible {
  display: block;
}

/* ===== RESPONSIVE UTILITIES ===== */
@media (max-width: 767px) {
  .hide-mobile {
    display: none !important;
  }
}

@media (min-width: 768px) {
  .hide-desktop {
    display: none !important;
  }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.5s ease;
}

/* ===== TOAST NOTIFICATIONS ===== */
.toast {
  position: fixed;
  bottom: var(--spacing-lg);
  right: var(--spacing-lg);
  background: var(--secondary-color);
  color: var(--bg-white);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 9999;
  animation: slideIn 0.3s ease;
}

.toast.success {
  background: var(--success);
  color: var(--secondary-color);
}

.toast.error {
  background: var(--error);
}

@keyframes slideIn {
  from {
    transform: translateX(400px);
  }
  to {
    transform: translateX(0);
  }
}

/* ===== LOADING STATES ===== */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid var(--border-color);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* ===== MODAL ===== */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.7);
  z-index: 9999;
  align-items: center;
  justify-content: center;
}

.modal.active {
  display: flex;
}

.modal-content {
  background: var(--bg-white);
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  max-width: 90%;
  max-height: 90%;
  overflow-y: auto;
  position: relative;
}

.modal-close {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--text-secondary);
}

.modal-close:hover {
  color: var(--secondary-color);
}

/* ===== PAGINATION ===== */
#paginationControls button {
  min-width: 44px;
}

#paginationControls .btn-outline:hover {
  background-color: var(--accent-light);
  border-color: var(--primary-color);
}