/* ===================================
   FREE-SMS Design System
   =================================== */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

/* CSS Custom Properties */
:root {
  --color-primary: #2463eb;
  --color-primary-hover: #1d4ed8;
  --color-primary-light: #dbeafe;
  --color-primary-50: #eff6ff;
  --color-success: #16a34a;
  --color-success-light: #dcfce7;
  --color-warning: #f59e0b;
  --color-warning-light: #fef3c7;
  --color-danger: #dc2626;
  --color-danger-light: #fee2e2;
  --color-bg: #ffffff;
  --color-bg-secondary: #f3f4f6;
  --color-bg-tertiary: #e5e7eb;
  --color-text: #111827;
  --color-text-secondary: #4b5563;
  --color-text-tertiary: #6b7280;
  --color-border: #e5e7eb;
  --color-border-hover: #d1d5db;
  --radius: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --transition: all 0.2s ease;
  --transition-slow: all 0.3s ease;
  --max-width: 800px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--color-text);
  background-color: var(--color-bg-secondary);
  line-height: 1.7;
  font-size: 15px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

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

/* ===================================
   Header
   =================================== */
.site-header {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  background: rgba(255, 255, 255, 0.95);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.site-logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-logo .logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--color-primary);
  color: white;
  border-radius: var(--radius);
  font-size: 16px;
}

.site-logo span {
  color: var(--color-primary);
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.header-nav a {
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: var(--radius);
  transition: var(--transition);
}

.header-nav a:hover {
  color: var(--color-primary);
  background: var(--color-primary-50);
}

/* Mobile hamburger */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--color-text);
  font-size: 1.3rem;
}

/* ===================================
   Main Content
   =================================== */
.main-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 24px 20px 60px;
  width: 100%;
  flex: 1;
}

/* ===================================
   Section Titles
   =================================== */
.section-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-title .icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: 6px;
  font-size: 14px;
}

/* ===================================
   Announcement Band (Full-width)
   =================================== */
.notice-band {
  background: #ebedf0;
  width: 100%;
  padding: 12px 20px;
}

.notice-band-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

/* ===================================
   Announcement / Notice Cards
   =================================== */
.notice-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.notice-card:hover {
  box-shadow: var(--shadow);
}

.notice-card.warning {
  border-left: 4px solid var(--color-warning);
  background: linear-gradient(135deg, var(--color-warning-light) 0%, var(--color-bg) 100%);
}

.notice-card.danger {
  border-left: 4px solid var(--color-danger);
  background: linear-gradient(135deg, var(--color-danger-light) 0%, var(--color-bg) 100%);
}

.notice-card.info {
  border-left: 4px solid var(--color-primary);
  background: linear-gradient(135deg, var(--color-primary-50) 0%, var(--color-bg) 100%);
}

.notice-title {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.notice-text {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.notice-list {
  list-style: disc;
  padding-left: 20px;
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.notice-list li {
  margin-bottom: 2px;
}

.notice-link-underline {
  color: var(--color-text);
  text-decoration: underline;
  font-weight: 600;
}

.notice-link-underline:hover {
  color: var(--color-primary);
}

.notice-link-red {
  color: var(--color-danger);
  font-weight: 600;
  text-decoration: none;
}

.notice-link-red:hover {
  color: #b91c1c;
  text-decoration: underline;
}

/* ===================================
   Phone Number Cards
   =================================== */
.phone-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.phone-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-slow);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.phone-card-info {
  flex: 1;
  min-width: 0;
}

.phone-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--color-primary);
  opacity: 0;
  transition: var(--transition);
}

.phone-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-border-hover);
  transform: translateY(-1px);
}

.phone-card:hover::before {
  opacity: 1;
}

.phone-number {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.02em;
  margin-bottom: 8px;
}

.phone-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 0;
  flex-wrap: wrap;
}

.phone-meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--color-text-tertiary);
}

.phone-meta-item .icon {
  font-size: 14px;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.status-badge.available {
  background: var(--color-success-light);
  color: var(--color-success);
}

.status-badge.busy {
  background: var(--color-warning-light);
  color: var(--color-warning);
}

.status-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.4;
  }
}

/* ===================================
   Buttons
   =================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  font-size: 0.9rem;
  font-weight: 600;
  font-family: inherit;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  line-height: 1;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
  box-shadow: 0 1px 3px rgba(36, 99, 235, 0.3);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  box-shadow: 0 4px 12px rgba(36, 99, 235, 0.35);
  transform: translateY(-1px);
  color: white;
}

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

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

.btn-secondary:hover {
  background: var(--color-bg-secondary);
  border-color: var(--color-border-hover);
  color: var(--color-text);
}

.btn-icon {
  padding: 10px;
}

.btn-sm {
  padding: 7px 16px;
  font-size: 0.8rem;
}

.btn-block {
  width: 100%;
}

/* ===================================
   FAQ Accordion
   =================================== */
.faq-section {
  margin-bottom: 40px;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.faq-item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: var(--color-border-hover);
}

.faq-question {
  display: block;
  width: 100%;
  padding: 16px 20px;
  background: var(--color-bg-secondary);
  border: none;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  text-align: left;
}

.faq-answer {
  display: block;
}

.faq-answer-inner {
  padding: 16px 20px;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* ===================================
   Timeline Page
   =================================== */
.timeline-header {
  background: transparent;
  border: none;
  border-radius: 0;
  padding: 24px 0;
  margin-bottom: 24px;
  box-shadow: none;
  text-align: center;
}

.timeline-phone-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: 0.03em;
  margin-bottom: 16px;
}

.timeline-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.timeline-section {
  margin-top: 24px;
}

.timeline-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.timeline-item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 18px 22px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  animation: fadeInUp 0.4s ease forwards;
  opacity: 0;
}

.timeline-item:hover {
  box-shadow: var(--shadow);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.timeline-item:nth-child(1) {
  animation-delay: 0.05s;
}

.timeline-item:nth-child(2) {
  animation-delay: 0.1s;
}

.timeline-item:nth-child(3) {
  animation-delay: 0.15s;
}

.timeline-item:nth-child(4) {
  animation-delay: 0.2s;
}

.timeline-item:nth-child(5) {
  animation-delay: 0.25s;
}

.timeline-item:nth-child(6) {
  animation-delay: 0.3s;
}

.timeline-item:nth-child(7) {
  animation-delay: 0.35s;
}

.timeline-item:nth-child(8) {
  animation-delay: 0.4s;
}

.timeline-item-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.timeline-sender {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-50);
  padding: 2px 10px;
  border-radius: 12px;
}

.timeline-time {
  font-size: 0.75rem;
  color: var(--color-text-tertiary);
}

.timeline-message {
  font-size: 0.9rem;
  color: var(--color-text);
  line-height: 1.7;
  word-break: break-all;
}

/* ===================================
   Toast Notification
   =================================== */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--color-text);
  color: white;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-size: 0.85rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* ===================================
   Terms Page
   =================================== */
.terms-content {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
}

.terms-content h2 {
  font-size: 1rem;
  font-weight: 700;
  margin: 28px 0 12px;
  color: var(--color-text);
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.terms-content h2:first-child {
  margin-top: 0;
}

.terms-content p,
.terms-content ul {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.9;
  margin-bottom: 12px;
}

.terms-content ul {
  padding-left: 20px;
}

.terms-content li {
  margin-bottom: 4px;
}

/* ===================================
   Footer
   =================================== */
.site-footer {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding: 32px 20px;
  margin-top: auto;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  text-align: center;
}

.footer-disclaimer {
  font-size: 0.8rem;
  color: var(--color-text-tertiary);
  line-height: 1.8;
  margin-bottom: 16px;
  padding: 16px;
  background: var(--color-bg-secondary);
  border-radius: var(--radius);
}

.footer-copyright {
  font-size: 0.75rem;
  color: var(--color-text-tertiary);
}

/* ===================================
   Back Link
   =================================== */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
  padding: 6px 12px;
  border-radius: var(--radius);
  transition: var(--transition);
}

.back-link:hover {
  color: var(--color-primary);
  background: var(--color-primary-50);
}

/* ===================================
   Responsive
   =================================== */
@media (max-width: 992px) {
  .phone-list {
    grid-template-columns: 1fr;
  }
}

/* Adjust card layout for 2-column grid to prevent wrapping */
@media (min-width: 993px) {
  .phone-card {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 20px;
  }

  .phone-card .btn {
    width: 100%;
  }

  .phone-number {
    font-size: 1.3rem;
    /* Slightly smaller for the vertical card */
  }
}

@media (max-width: 768px) {
  .header-inner {
    height: 56px;
  }

  .site-logo {
    font-size: 1.25rem;
  }

  .header-nav {
    display: none;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: 12px 20px;
    box-shadow: var(--shadow-md);
  }

  .header-nav.open {
    display: flex;
  }

  .header-nav a {
    padding: 10px 12px;
    font-size: 0.9rem;
  }

  .menu-toggle {
    display: block;
  }

  .main-content {
    padding: 16px 16px 40px;
  }

  .phone-number {
    font-size: 1.25rem;
  }

  .phone-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .timeline-phone-number {
    font-size: 1.5rem;
  }

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

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

  .notice-card {
    padding: 16px 18px;
  }

  .terms-content {
    padding: 20px;
  }
}

@media (max-width: 480px) {
  .phone-number {
    font-size: 1.1rem;
  }

  .timeline-phone-number {
    font-size: 1.3rem;
  }
}

/* ===================================
   Utility Classes
   =================================== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

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

.mt-1 {
  margin-top: 8px;
}

.mt-2 {
  margin-top: 16px;
}

.mt-3 {
  margin-top: 24px;
}

.mb-1 {
  margin-bottom: 8px;
}

.mb-2 {
  margin-bottom: 16px;
}

.mb-3 {
  margin-bottom: 24px;
}