/* =====================================================
   LAYOUT.CSS — App Shell, Header, Sidebar, Footer
   ===================================================== */

/* =====================================================
   1. APP CONTAINER
   ===================================================== */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    overflow: visible;
}

/* =====================================================
   2. HEADER — White, premium
   ===================================================== */
.app-header {
    height: var(--header-height);
    flex-shrink: 0;
    background: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(244,247,255,0.96));
    border-bottom: 1px solid rgba(148, 163, 184, 0.2);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.06);
    backdrop-filter: blur(18px);
}

.header-inner {
    max-width: var(--max-content-width);
    margin: 0 auto;
    height: 100%;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

/* =====================================================
   3. APP BODY
   ===================================================== */
.app-body {
    display: flex;
    flex: 1;
    max-width: var(--max-content-width);
    margin: 0 auto;
    width: 100%;
    align-items: flex-start;
}

/* Home page — remove main-content padding; home-wrap controls its own max-width */
body.page-home .app-body {
    max-width: 100%;
    width: 100%;
    margin: 0 auto;
}

body.page-home .app-body .main-content {
    padding: 0;
}

.main-content {
    flex: 1;
    min-height: 0;
    overflow: visible;
    overflow-y: auto;
    padding: 32px 48px;
}

/* =====================================================
   4. SIDEBAR
   ===================================================== */
.sidebar {
    background: #ffffff;
    border-right: 1px solid var(--border-color);
    align-self: flex-start;
    position: sticky;
    top: 90px;
    width: 220px;
    flex-shrink: 0;
}

.sidebar-card {
    background: #ffffff;
    border-radius: 16px;
    padding: 20px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    margin-bottom: 24px;
    position: sticky;
    top: 90px;
    z-index: 0;
}

/* =====================================================
   5. FOOTER
   ===================================================== */
.app-footer {
    background: #020617;
    color: #cbd5e1;
    padding: 60px 20px 20px;
    margin-top: 60px;
    position: relative;
    z-index: 10;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
}

.footer-brand h3 { font-size: 18px; margin-bottom: 10px; }
.footer-brand p  { font-size: 14px; color: #94a3b8; margin-bottom: 18px; }

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: #fff;
    margin-bottom: 14px;
}

.footer-logo img        { width: 34px; height: 34px; border-radius: 9px; }
.footer-logo-text       { display: flex; flex-direction: column; gap: 2px; }
.footer-logo-name       { font-size: 15px; font-weight: 800; letter-spacing: 1px; color: #ffffff; line-height: 1; font-family: 'Syne', sans-serif; }
.footer-logo-tagline    { font-size: 10px; font-weight: 400; color: rgba(255,255,255,0.4); letter-spacing: 0.2px; line-height: 1; }

.footer-social          { display: flex; gap: 12px; }

.footer-social a {
    width: 36px; height: 36px;
    background: #111827;
    display: flex; align-items: center; justify-content: center;
    border-radius: 8px;
    color: #cbd5e1;
    transition: 0.2s ease;
}

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

.footer-col h4          { font-size: 13px; margin-bottom: 14px; color: #ffffff; letter-spacing: 0.5px; font-family: 'DM Sans', sans-serif; }

.footer-col a {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    color: #94a3b8;
    text-decoration: none;
    transition: 0.2s ease;
}

.footer-col a:hover     { color: #ffffff; }

.footer-bottom {
    border-top: 1px solid #1e293b;
    margin-top: 35px;
    padding-top: 18px;
    text-align: center;
    font-size: 13px;
    color: #64748b;
}

/* =====================================================
   6. NAVIGATION
   ===================================================== */
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
}

.logo img {
    width: 34px; height: 34px;
    object-fit: contain;
    border-radius: 9px;
    box-shadow: 0 8px 18px rgba(57,117,234,0.2);
}

.logo-text { display: flex; flex-direction: column; gap: 1px; }

.logo-name {
    font-size: 15px;
    font-weight: 800;
    letter-spacing: 1px;
    color: #0f172a;
    line-height: 1;
    display: block;
    font-family: 'Syne', sans-serif;
}

.logo-tagline {
    font-size: 9.5px;
    font-weight: 400;
    color: #94a3b8 !important;
    -webkit-text-fill-color: #94a3b8 !important;
    background: none !important;
    letter-spacing: 0.2px;
    line-height: 1;
    white-space: nowrap;
    display: block;
}

.main-nav { display: flex; gap: 10px; align-items: center; }

.main-nav a {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 8px 14px;
    border-radius: 999px;
    position: relative;
    transition: all var(--transition-fast);
    font-family: 'DM Sans', sans-serif;
}

.main-nav a:hover,
.main-nav a.active {
    color: #0f172a;
    background: rgba(59, 130, 246, 0.08);
}

.main-nav a.active {
    box-shadow: inset 0 0 0 1px rgba(59, 130, 246, 0.16);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-primary);
    cursor: pointer;
    padding: 8px;
}

/* =====================================================
   7. ACCOUNT DROPDOWN & LOGOUT MODAL
   ===================================================== */
.account-menu     { position: relative; cursor: pointer; }
.account-trigger  { font-size: 22px; color: var(--text-secondary); }

.header-avatar {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: #EFF6FF;
    border: 2px solid #DBEAFE;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Syne', sans-serif;
    font-size: 14px;
    font-weight: 800;
    color: #3975EA;
    cursor: pointer;
    transition: all 0.15s ease;
    user-select: none;
}

.header-avatar:hover {
    background: #DBEAFE;
    border-color: #3975EA;
}

.account-dropdown {
    position: absolute;
    right: 0; top: 40px;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 12px;
    min-width: 190px;
    display: none;
    box-shadow: 0 8px 32px rgba(57,117,234,0.12);
    font-size: 14px;
    font-family: 'DM Sans', sans-serif;
}

.account-dropdown a {
    display: block;
    padding: 7px 4px;
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 6px;
    transition: color 0.15s;
}

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

.account-email { font-size: 12px; color: var(--text-muted); margin-bottom: 8px; }

.account-section {
    margin-top: 12px;
    padding-top: 10px;
    border-top: 1px solid var(--border-color);
}

.account-section:first-of-type { border-top: none; padding-top: 0; }

.account-section .section-title {
    display: block;
    font-size: 11px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.logout-modal {
    position: fixed; inset: 0;
    background: rgba(15,23,42,0.4);
    backdrop-filter: blur(4px);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.logout-box {
    background: white;
    padding: 32px;
    border-radius: 16px;
    width: 100%; max-width: 380px;
    text-align: center;
    box-shadow: 0 24px 60px rgba(0,0,0,0.15);
    border: 1px solid var(--border-color);
}

.logout-box h3   { margin-bottom: 10px; font-family: 'Syne', sans-serif; color: var(--text-primary); }
.logout-box p    { font-size: 14px; color: var(--text-secondary); margin-bottom: 20px; }
.logout-actions  { display: flex; justify-content: center; gap: 12px; }

/* =====================================================
   8. RESPONSIVE — LAYOUT
   ===================================================== */
@media (max-width: 900px) {
    .footer-inner { grid-template-columns: 1fr 1fr; gap: 30px; }
}

@media (max-width: 768px) {
    :root { --header-height: 56px; }
    .header-inner { padding: 0 16px; }
    .mobile-menu-toggle { display: block; }

    .main-nav {
        position: fixed;
        top: var(--header-height);
        left: 0; right: 0;
        background: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(244,247,255,0.97));
        flex-direction: column;
        padding: 16px 20px;
        gap: 0;
        border-bottom: 1px solid rgba(148, 163, 184, 0.2);
        box-shadow: 0 16px 32px rgba(15,23,42,0.08);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-medium);
        z-index: 999;
    }

    .main-nav.active { transform: translateY(0); opacity: 1; visibility: visible; }
    .main-nav a      { padding: 14px 0; border-bottom: 1px solid rgba(226,232,240,0.8); font-size: 15px; border-radius: 0; }
    .main-nav a:last-child { border-bottom: none; }
    .main-nav a.active::after { display: none; }
    .main-content    { padding: 16px; }
    .hidden-mobile   { display: none !important; }
    .header-currency-toggle { display: none; }
}

@media (max-width: 600px) {
    .footer-inner  { grid-template-columns: 1fr; }
    .main-content  { padding: 12px; }
}

@media (max-width: 480px) {
    .header-inner  { padding: 0 12px; }
    .logo-tagline  { display: none; }
    .btn-primary   { padding: 7px 14px; font-size: 13px; }
}

/* =====================================================
   9. HEADER CURRENCY TOGGLE
   ===================================================== */
.header-currency-toggle {
    display: flex;
    align-items: center;
    background: #F1F5F9;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 3px;
    gap: 2px;
}

.hdr-cur-btn {
    padding: 5px 11px;
    border-radius: 6px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
    font-family: 'DM Sans', sans-serif;
}

.hdr-cur-btn.active {
    background: var(--primary);
    color: #ffffff;
    box-shadow: 0 1px 4px rgba(57,117,234,0.3);
}

.hdr-cur-btn:hover:not(.active) {
    color: var(--text-primary);
    background: rgba(255,255,255,0.8);
}

@media (max-width: 768px) {
    .header-currency-toggle { display: none; }
}

/* =====================================================
   10. BOTTOM TAB BAR — Mobile only
   ===================================================== */
.bottom-tab-bar { display: none; }

@media (max-width: 768px) {
    .mobile-menu-toggle { display: none !important; }
    .main-nav           { display: none !important; }
    .app-body           { padding-bottom: 72px; }
    .pf-footer          { margin-bottom: 64px; }

    .bottom-tab-bar {
        display: flex;
        position: fixed;
        bottom: 0; left: 0; right: 0;
        z-index: 1000;
        background: #ffffff;
        border-top: 1px solid var(--border-color);
        box-shadow: 0 -4px 20px rgba(57,117,234,0.08);
        padding-bottom: env(safe-area-inset-bottom, 0px);
        height: calc(60px + env(safe-area-inset-bottom, 0px));
        align-items: stretch;
    }

    .tab-item {
        flex: 1;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 4px;
        text-decoration: none;
        color: #94a3b8;
        padding: 8px 4px 6px;
        position: relative;
        transition: color 0.15s ease;
        -webkit-tap-highlight-color: transparent;
        cursor: pointer;
        border: none;
        background: none;
        min-height: 60px;
        font-family: 'DM Sans', sans-serif;
    }

    .tab-item:active { transform: scale(0.93); transition: transform 0.1s; }

    .tab-icon {
        width: 24px; height: 24px;
        display: flex; align-items: center; justify-content: center;
        font-size: 18px; line-height: 1;
        transition: transform 0.2s cubic-bezier(0.34,1.56,0.64,1);
    }

    .tab-label { font-size: 10px; font-weight: 600; letter-spacing: 0.2px; line-height: 1; }

    .tab-item.active { color: var(--primary); }
    .tab-item.active .tab-icon { transform: translateY(-2px) scale(1.1); }

    .tab-item.active::before {
        content: '';
        position: absolute;
        top: 0; left: 50%;
        transform: translateX(-50%);
        width: 32px; height: 3px;
        background: var(--primary);
        border-radius: 0 0 3px 3px;
    }

    .tab-auth-dot {
        position: absolute;
        top: 7px; right: calc(50% - 16px);
        width: 7px; height: 7px;
        background: #22c55e;
        border-radius: 50%;
        border: 1.5px solid #fff;
    }
}

@media (max-width: 480px) {
    .bottom-tab-bar { height: calc(56px + env(safe-area-inset-bottom, 0px)); }
    .tab-icon       { font-size: 17px; width: 22px; height: 22px; }
    .tab-label      { font-size: 9.5px; }
    .tab-item       { min-height: 56px; padding: 7px 4px 5px; }
}

@media (max-width: 360px) {
    .tab-label { font-size: 9px; }
    .tab-icon  { font-size: 16px; }
}

/* =====================================================
   LAYOUT ENHANCEMENTS — Header scroll effect,
   design polish, mobile improvements
   ===================================================== */

/* ── Header Scroll Effect ──
   main.js adds .scrolled class on scroll > 10px.
   This gives a subtle glassmorphism effect. */
.app-header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0,0,0,0.08);
  box-shadow: 0 2px 20px rgba(0,0,0,0.06);
}

/* Page fade-in handled by JS only — no CSS opacity:0 to avoid blank page if JS fails */

/* ── Better active nav link ── */
.main-nav a.active {
  color: #2563eb;
  font-weight: 700;
}

/* ── Currency toggle buttons ── */
.header-currency-toggle {
  display: flex;
  align-items: center;
  background: #f1f5f9;
  border-radius: 8px;
  padding: 3px;
  gap: 2px;
}

.hdr-cur-btn {
  padding: 5px 12px;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: #64748b;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.hdr-cur-btn.active {
  background: #fff;
  color: #1d4ed8;
  box-shadow: 0 1px 4px rgba(0,0,0,0.1);
}

.hdr-cur-btn:hover:not(.active) { color: #1e293b; }

/* ── Mobile nav improvements ── */
@media (max-width: 768px) {
  /* Full-width mobile nav dropdown */
  .main-nav.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid #e2e8f0;
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
    padding: 8px 0;
    z-index: 999;
  }

  .main-nav a {
    padding: 14px 20px;
    font-size: 15px;
    border-bottom: 1px solid #f8fafc;
  }

  .main-nav a:last-child { border-bottom: none; }

  /* Currency toggle hidden on mobile (in header) — accessible via tab bar */
  .header-currency-toggle { display: none; }
}

/* =====================================================
   DARK MODE — Layout / Header / Nav / Bottom Bar
   ===================================================== */
body.dark .app-header {
    background: #1E293B;
    border-bottom-color: #334155;
    box-shadow: 0 1px 8px rgba(0,0,0,0.3);
}
body.dark .app-header.scrolled {
    background: rgba(30,41,59,0.95);
    border-bottom-color: #334155;
}
body.dark .logo-name       { color: #F1F5F9; }
body.dark .main-nav a      { color: #94A3B8; }
body.dark .main-nav a.active,
body.dark .main-nav a:hover { color: #3B82F6; }
body.dark .main-nav a.active::after { background: #3B82F6; }

body.dark .header-avatar {
    background: #1E3A5F;
    border-color: #2563EB;
    color: #60A5FA;
}
body.dark .account-dropdown {
    background: #1E293B;
    border-color: #334155;
}
body.dark .account-dropdown a { color: #F1F5F9; }
body.dark .account-section    { border-top-color: #334155; }
body.dark .logout-box {
    background: #1E293B;
    border-color: #334155;
}
body.dark .logout-box h3 { color: #F1F5F9; }
body.dark .logout-box p  { color: #94A3B8; }

body.dark .header-currency-toggle {
    background: #0F172A;
    border-color: #334155;
}
body.dark .hdr-cur-btn { color: #94A3B8; }
body.dark .hdr-cur-btn.active {
    background: #1E3A5F;
    color: #60A5FA;
}
body.dark .hdr-cur-btn:hover:not(.active) { color: #F1F5F9; }

/* Mobile nav */
body.dark .main-nav {
    background: #1E293B;
    border-bottom-color: #334155;
}
body.dark .main-nav a { border-bottom-color: #334155; }

/* Bottom tab bar */
body.dark .bottom-tab-bar {
    background: #1E293B;
    border-top-color: #334155;
    box-shadow: 0 -4px 20px rgba(0,0,0,0.4);
}
body.dark .tab-item          { color: #64748B; }
body.dark .tab-item.active   { color: #3B82F6; }
body.dark .tab-item.active::before { background: #3B82F6; }
body.dark .tab-auth-dot      { border-color: #1E293B; }

/* Sidebar */
body.dark .sidebar,
body.dark .sidebar-card {
    background: #1E293B;
    border-color: #334155;
}