/* ==========================================================================
   STREAMER & WEB CREATOR PORTFOLIO — MONOCHROME COMPONENTS & BRANDING
   ========================================================================== */

/* --- Snowflake Particle Canvas Overlay --- */
#snowflake-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 50;
}

/* --- 1. Header --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  padding: 1.25rem 0;
  transition: background-color 0.3s, padding 0.3s;
}

.site-header.scrolled {
  background-color: rgba(247, 247, 244, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-light);
  padding: 0.85rem 0;
}

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

.brand-logo-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.goat-logo-img {
  width: 38px;
  height: 38px;
  object-fit: contain;
  border-radius: 50%;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  padding: 3px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.04);
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

.header-status-dot {
  width: 7px;
  height: 7px;
  background-color: #10B981;
  border-radius: 50%;
  display: inline-block;
  margin-left: 0.25rem;
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.6);
}

.desktop-nav {
  display: none;
}

@media (min-width: 768px) {
  .desktop-nav {
    display: flex;
    align-items: center;
    gap: 2rem;
    background: var(--bg-surface);
    border: 1px solid var(--border-light);
    padding: 0.45rem 1.5rem;
    border-radius: var(--radius-pill);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.04);
  }

  .nav-link {
    font-family: var(--font-display);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-muted);
    transition: var(--transition-fast);
  }

  .nav-link:hover,
  .nav-link.active {
    color: var(--text-main);
  }
}

.header-right-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.lang-switcher-container {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-pill);
  padding: 3px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
}

.lang-btn {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-pill);
  transition: var(--transition-fast);
}

.lang-btn.active {
  color: #FFFFFF;
  background: var(--text-main);
}

.btn-pill-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.8rem;
  background: var(--text-main);
  color: #FFFFFF;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius-pill);
  transition: var(--transition-fast);
  border: 1px solid var(--text-main);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.btn-pill-primary:hover {
  background: #2A2A2A;
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.btn-pill-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  background: var(--bg-surface);
  color: var(--text-main);
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-light);
  transition: var(--transition-fast);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
}

.btn-pill-secondary:hover {
  border-color: var(--text-main);
  transform: translateY(-2px);
}

/* Mobile Responsiveness Refinements (<768px, iPhone 15 Plus & Modern Devices) */
@media (max-width: 767px) {
  .btn-pill-primary,
  .btn-pill-secondary {
    padding: 0.75rem 0.85rem;
    font-size: 0.82rem;
    width: 100%;
    white-space: nowrap;
  }

}

/* --- 2. Footer --- */
.site-footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-light);
  padding: 3rem 0 4rem 0;
  position: relative;
  overflow: hidden;
}

.footer-container {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-items: center;
  text-align: center;
  position: relative;
  z-index: 2;
}

@media (min-width: 768px) {
  .footer-container {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

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

.footer-goat-icon {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.footer-copy-text {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.back-to-top-btn {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-main);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: var(--transition-fast);
}

.back-to-top-btn:hover {
  transform: translateY(-2px);
}

/* ==========================================================================
   NÚT NỔI & MODAL TOP DONATE / SAO KÊ
   ========================================================================== */

/* FLOATING FIXED ROUND BUTTON (TOP DONATE & SAO KÊ) */
.floating-donate-btn {
  position: fixed;
  bottom: 24px;
  left: 24px;
  z-index: 999;
  height: 52px;
  padding: 0 1.2rem;
  border-radius: 50px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 2px solid #F59E0B;
  color: #1E293B;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.88rem;
  box-shadow: 0 10px 25px rgba(245, 158, 11, 0.3);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@media (max-width: 480px) {
  .floating-donate-btn {
    bottom: 16px;
    left: 16px;
    height: 46px;
    padding: 0 1rem;
    font-size: 0.8rem;
  }
}

.floating-donate-btn:hover {
  transform: scale(1.08) translateY(-2px);
  box-shadow: 0 14px 30px rgba(245, 158, 11, 0.45);
  background: #FFFBEB;
}

.floating-btn-icon {
  font-size: 1.25rem;
}

/* TOP DONATE & SAO KÊ MODAL POPUP */
.donate-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  padding: 1.5rem;
}

.donate-modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.donate-modal-card {
  width: 100%;
  max-width: 540px;
  background: #FFFFFF;
  border-radius: 24px;
  border: 1px solid #E2E8F0;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.2);
  overflow: hidden;
  overscroll-behavior: contain !important;
  transform: scale(0.9) translateY(20px);
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  display: flex;
  flex-direction: column;
  max-height: 85vh;
}

.donate-modal-overlay.active .donate-modal-card {
  transform: scale(1) translateY(0);
}

.modal-header-nav {
  padding: 1rem 1.25rem;
  background: #F8FAFC;
  border-bottom: 1px solid #E2E8F0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.modal-tabs {
  display: flex;
  gap: 0.35rem;
  background: #E2E8F0;
  padding: 0.25rem;
  border-radius: 50px;
  flex: 1;
  min-width: 0;
}

.tab-btn {
  padding: 0.45rem 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(0.72rem, 2.5vw, 0.82rem);
  font-weight: 700;
  border-radius: 50px;
  border: none;
  background: transparent;
  color: #64748B;
  cursor: pointer;
  transition: all 0.2s ease;
  flex: 1;
  text-align: center;
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
}

.tab-btn.active {
  background: #FFFFFF;
  color: #0F172A;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.tab-month-tag {
  font-size: 0.88em;
  opacity: 0.85;
}

.btn-close-modal {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid #CBD5E1;
  background: #FFFFFF;
  font-size: 1.1rem;
  font-weight: 700;
  color: #64748B;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.btn-close-modal:hover {
  background: #EF4444;
  color: #FFFFFF;
  border-color: #EF4444;
}

.modal-tab-content {
  padding: 1.25rem;
  overflow-y: auto;
  flex: 1;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain !important;
  touch-action: pan-y !important;
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

#top-donators-list,
#top-all-donators-list,
#saoke-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  width: 100%;
}

.top-item-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 1.15rem;
  border-radius: 16px;
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.03);
  gap: 0.65rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.top-item-card:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.06);
}

.top-item-rank {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.05rem;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background: #F1F5F9;
  color: #64748B;
}

.top-1 {
  background: linear-gradient(135deg, #FFFDF5 0%, #FEF9C3 100%);
  border-color: #FDE68A;
}

.top-1 .top-item-rank {
  background: #FEF3C7;
  color: #D97706;
  border: 1px solid #FCD34D;
}

.top-2 {
  background: #F8FAFC;
  border-color: #CBD5E1;
}

.top-2 .top-item-rank {
  background: #E2E8F0;
  color: #475569;
  border: 1px solid #CBD5E1;
}

.top-3 {
  background: linear-gradient(135deg, #FFFBF5 0%, #FFEDD5 100%);
  border-color: #FED7AA;
}

.top-3 .top-item-rank {
  background: #FFEDD5;
  color: #C2410C;
  border: 1px solid #FDBA74;
}

.top-item-info {
  flex: 1;
  min-width: 0;
  margin: 0 0.4rem;
  text-align: left;
}

.top-item-name {
  font-weight: 800;
  font-size: 0.95rem;
  color: #0F172A;
  overflow-wrap: break-word;
  word-break: break-word;
  line-height: 1.35;
}

.top-item-amount {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.95rem;
  color: #10B981;
  white-space: nowrap;
  flex-shrink: 0;
}

.saoke-item-card {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 0.95rem 1.15rem;
  border-radius: 16px;
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.03);
  text-align: left;
  min-width: 0;
  word-break: break-word;
  overflow-wrap: anywhere;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.saoke-item-card:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.06);
}

.saoke-row-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  min-width: 0;
}

.saoke-date {
  font-size: 0.78rem;
  font-weight: 600;
  color: #64748B;
  background: #F1F5F9;
  padding: 0.2rem 0.55rem;
  border-radius: 6px;
  white-space: nowrap;
}

.saoke-amount {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.95rem;
  color: #10B981;
  white-space: nowrap;
  flex-shrink: 0;
}

.saoke-desc {
  font-size: 0.83rem;
  color: #334155;
  line-height: 1.5;
  word-break: break-word;
  overflow-wrap: anywhere;
  background: #F8FAFC;
  border: 1px solid #E2E8F0;
  padding: 0.55rem 0.8rem;
  border-radius: 10px;
}

/* MOBILE RESPONSIVE MODAL FIXES */
@media (max-width: 576px) {
  .donate-modal-overlay {
    padding: 0.75rem 0.5rem;
  }

  .donate-modal-card {
    max-height: 88vh;
    border-radius: 22px;
  }

  .modal-header-nav {
    padding: 0.75rem 0.9rem;
    gap: 0.4rem;
  }

  .modal-tabs {
    padding: 0.2rem;
    gap: 0.25rem;
  }

  .tab-btn {
    padding: 0.42rem 0.35rem;
    font-size: 0.72rem;
  }

  .tab-month-tag {
    display: none;
  }

  .modal-tab-content {
    padding: 0.9rem 0.8rem;
  }

  #top-donators-list,
  #top-all-donators-list,
  #saoke-list {
    gap: 0.65rem;
  }

  .top-item-card {
    padding: 0.8rem 0.9rem;
    gap: 0.5rem;
    border-radius: 14px;
  }

  .top-item-rank {
    width: 32px;
    height: 32px;
    font-size: 0.95rem;
  }

  .top-item-info {
    margin: 0 0.3rem;
  }

  .top-item-name {
    font-size: 0.88rem;
  }

  .top-item-amount {
    font-size: 0.9rem;
  }

  .saoke-item-card {
    padding: 0.8rem 0.9rem;
    gap: 0.45rem;
    border-radius: 14px;
  }

  .saoke-date {
    font-size: 0.73rem;
    padding: 0.15rem 0.45rem;
  }

  .saoke-amount {
    font-size: 0.88rem;
  }

  .saoke-desc {
    font-size: 0.8rem;
    padding: 0.45rem 0.65rem;
    border-radius: 8px;
  }
}