/* ========================================
   Common Styles - Shiny App
   ======================================== */

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

/* CSS Variables */
:root {
  --color-navy: #3d4f5f;
  --color-navy-dark: #2c3e50;
  --color-text-strong: #1a1a1a;
  --color-terracotta: #b5784e;
  --color-pink-beige: #e4d3c6;
  --color-turquoise: #4ecdc4;
  --color-white: #ffffff;
  --color-dark: #333333;
  --color-gray: #666666;
  --color-light-gray: #f5f5f5;
  --color-border: #dddddd;
  --font-base: 'M PLUS Rounded 1c', -apple-system, BlinkMacSystemFont, 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', Meiryo, sans-serif;
  --font-dronenote: var(--font-base);
  --max-width: 1100px;
  --header-height: 64px;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 64px;
}

body {
  font-family: var(--font-base);
  color: var(--color-dark);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

ul, ol {
  list-style: none;
}

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

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

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

.section-title {
  font-size: 28px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 48px;
  letter-spacing: 0.02em;
}

/* ========================================
   Scroll Animations
   ======================================== */
[data-animate] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

[data-animate][data-delay="1"] {
  transition-delay: 0.12s;
}

[data-animate][data-delay="2"] {
  transition-delay: 0.24s;
}

[data-animate].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================
   Placeholder Image
   ======================================== */
.placeholder-img {
  background-color: #ddd;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #666;
  font-size: 14px;
  border-radius: 8px;
  overflow: hidden;
  position: relative;
}

.placeholder-img::before {
  content: '';
  position: absolute;
  inset: 0;
  border: 2px dashed #bbb;
  border-radius: 8px;
  pointer-events: none;
}

/* ========================================
   Header (Top page - no nav)
   ======================================== */
.site-header {
  position: relative;
  z-index: 100;
}

/* ========================================
   Header (Dronenote pages)
   ======================================== */
.dn-header {
  background-color: var(--color-navy);
  color: var(--color-white);
  height: var(--header-height);
  display: flex;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
}

.dn-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.dn-header-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
}

.dn-header-logo .logo-icon {
  width: 32px;
  height: 32px;
  display: block;
  flex-shrink: 0;
}

.dn-nav {
  display: flex;
  gap: 24px;
  align-items: center;
}

.dn-nav a {
  color: var(--color-white);
  font-size: 14px;
  opacity: 0.85;
  white-space: nowrap;
  transition: opacity 0.2s;
}

.dn-nav a:hover {
  opacity: 1;
}

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

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-white);
  transition: transform 0.3s, opacity 0.3s;
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile nav overlay */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-navy);
  z-index: 99;
  padding: 32px 24px;
}

.mobile-nav.active {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.mobile-nav a {
  color: var(--color-white);
  font-size: 18px;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

/* ========================================
   Footer (Top page)
   ======================================== */
.site-footer {
  background-color: var(--color-navy);
  color: var(--color-white);
  padding: 48px 0 32px;
  text-align: center;
  font-size: 14px;
}

.site-footer a {
  color: var(--color-white);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.site-footer a:hover {
  opacity: 0.7;
}

/* ========================================
   Footer (Dronenote pages)
   ======================================== */
.dn-footer {
  background-color: var(--color-navy);
  color: var(--color-white);
  padding: 48px 0 24px;
}

.dn-footer .container {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 32px;
}

.dn-footer-left {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.dn-footer-left .footer-logo {
  font-size: 18px;
  font-weight: 700;
}

.dn-footer-left .footer-email {
  font-size: 14px;
  opacity: 0.8;
}

.dn-footer-social {
  display: flex;
  gap: 16px;
  margin-top: 8px;
}

.dn-footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: rgba(255,255,255,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  transition: background-color 0.2s, transform 0.2s;
}

.dn-footer-social a svg {
  width: 17px;
  height: 17px;
  display: block;
}

.dn-footer-social a:hover {
  background-color: rgba(255,255,255,0.3);
  transform: translateY(-2px);
}

.dn-footer-right {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-end;
}

.dn-footer-badges {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.dn-footer-badges .store-badge {
  width: 140px;
  height: 42px;
  object-fit: contain;
  font-size: 11px;
}

.dn-footer-badges .placeholder-img {
  width: 140px;
  height: 42px;
  object-fit: contain;
  font-size: 11px;
}

/* Badge + QR pair (shared across hero / pricing / footer) */
.dn-badge-pair {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.dn-qr-card {
  background-color: #fff;
  border-radius: 8px;
  padding: 6px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  display: flex;
  box-sizing: content-box;
}

.dn-qr-card img {
  display: block;
  width: 100%;
  height: 100%;
}

.dn-hero-badges .dn-qr-card {
  width: 100px;
  height: 100px;
}

.dn-pricing-badges .dn-qr-card {
  width: 120px;
  height: 120px;
}

.dn-footer-badges .dn-qr-card {
  width: 90px;
  height: 90px;
}

@media (max-width: 768px) {
  .dn-qr-card {
    display: none;
  }
  .dn-footer-badges {
    flex-direction: column;
    gap: 10px;
  }
}

.dn-footer .btn-portal {
  display: inline-block;
  border: 1px solid var(--color-white);
  color: var(--color-white);
  padding: 8px 24px;
  border-radius: 24px;
  font-size: 14px;
  transition: background-color 0.2s;
}

.dn-footer .btn-portal:hover {
  background-color: rgba(255,255,255,0.1);
}

.dn-footer-note {
  font-size: 12px;
  opacity: 0.7;
  margin-top: 4px;
  text-align: right;
}

.dn-footer-copyright {
  text-align: center;
  font-size: 12px;
  opacity: 0.6;
  margin-top: 32px;
  padding-top: 16px;
  border-top: 1px solid rgba(255,255,255,0.1);
}

/* ========================================
   Buttons
   ======================================== */
.btn {
  display: inline-block;
  padding: 14px 40px;
  border-radius: 32px;
  font-size: 16px;
  font-weight: 700;
  text-align: center;
  transition: opacity 0.2s, transform 0.2s;
  cursor: pointer;
  border: none;
}

.btn:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

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

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

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

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

/* ========================================
   Form
   ======================================== */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  margin-bottom: 6px;
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-size: 16px;
  font-family: inherit;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-terracotta);
}

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

.required {
  color: #e25c5c;
}

.form-success {
  text-align: center;
  padding: 40px 24px;
  background-color: var(--color-white);
  border-radius: 8px;
  max-width: 600px;
  margin: 0 auto;
}

.form-success p {
  font-size: 15px;
  color: var(--color-dark);
  line-height: 1.8;
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 768px) {
  .section {
    padding: 48px 0;
  }

  .section-title {
    font-size: 22px;
    margin-bottom: 32px;
  }

  .dn-nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .dn-footer .container {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .dn-footer-right {
    align-items: center;
  }

  .dn-footer-note {
    text-align: center;
  }
}

/* ========================================
   Image Lightbox Modal
   ======================================== */
.lightbox-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.9);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, visibility 0.2s;
  cursor: pointer;
}

.lightbox-overlay.is-active {
  opacity: 1;
  visibility: visible;
}

.lightbox-overlay img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  border-radius: 4px;
}

.lightbox-close {
  position: absolute;
  top: 16px;
  right: 20px;
  background: none;
  border: none;
  color: #fff;
  font-size: 36px;
  line-height: 1;
  cursor: pointer;
  padding: 8px;
  opacity: 0.8;
  transition: opacity 0.2s;
}

.lightbox-close:hover {
  opacity: 1;
}