/* ===== BURCKHARDT COMPRESSION THEME ===== */
:root{
  --bg: #0a1628;
  --glass: rgba(255,255,255,0.05);
  --glass-border: rgba(255,255,255,0.08);
  --text: #ffffff;
  --text-secondary: #dce6f0;
  --text-muted: #a8bdd0;
  --accent: #e30613;
  --accent-light: #ff2d3b;
  --accent-glow: rgba(227,6,19,0.35);
  --navy: #002d6b;
  --blue: #0050a0;
  --green: #10b981;
  --error: #ef4444;
  --radius: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
}

*{box-sizing:border-box;margin:0;padding:0}

html{scroll-behavior:smooth}

body{
  font-family:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;
  background:var(--bg);
  background-image:linear-gradient(180deg,#0a1628 0%,#0d1f3c 100%);
  color:var(--text);
  min-height:100vh;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  text-rendering:optimizeLegibility;
}

/* ===== TEXT SELECTION ===== */
::selection{background:rgba(227,6,19,0.35);color:#fff}
::-moz-selection{background:rgba(227,6,19,0.35);color:#fff}

/* ===== CUSTOM SCROLLBAR ===== */
*{scrollbar-width:thin;scrollbar-color:rgba(255,255,255,0.12) transparent}
*::-webkit-scrollbar{width:10px;height:10px}
*::-webkit-scrollbar-track{background:transparent}
*::-webkit-scrollbar-thumb{
  background:rgba(255,255,255,0.10);
  border-radius:999px;
  border:2px solid transparent;
  background-clip:padding-box;
  transition:background .2s ease;
}
*::-webkit-scrollbar-thumb:hover{background:rgba(255,255,255,0.22);background-clip:padding-box}
[data-theme="light"] *{scrollbar-color:rgba(0,0,0,0.18) transparent}
[data-theme="light"] *::-webkit-scrollbar-thumb{background:rgba(0,0,0,0.15);background-clip:padding-box}
[data-theme="light"] *::-webkit-scrollbar-thumb:hover{background:rgba(0,0,0,0.28);background-clip:padding-box}

/* ===== FOCUS-VISIBLE (cleaner mouse, accessible keyboard) ===== */
:focus{outline:none}
:focus-visible{
  outline:2px solid var(--blue);
  outline-offset:2px;
  border-radius:6px;
}
button:focus-visible,a:focus-visible{outline-offset:3px}

/* ===== ANIMATED BACKGROUND ===== */
.bg-blobs{position:fixed;inset:0;z-index:0;overflow:hidden;pointer-events:none}

.blob{
  position:absolute;
  border-radius:50%;
  filter:blur(80px);
  opacity:0.5;
  animation:float 20s ease-in-out infinite;
}

.blob-1{
  width:600px;height:600px;
  background:linear-gradient(135deg,#002d6b,#0050a0);
  top:-200px;left:-100px;
}
.blob-2{
  width:500px;height:500px;
  background:linear-gradient(135deg,#0050a0,#003d7a);
  bottom:-150px;right:-100px;
  animation-delay:-7s;
}
.blob-3{
  width:350px;height:350px;
  background:linear-gradient(135deg,#e30613,#8b0000);
  top:40%;left:50%;
  animation-delay:-14s;
  opacity:0.25;
}

@keyframes float{
  0%,100%{transform:translate(0,0) scale(1)}
  33%{transform:translate(30px,-40px) scale(1.05)}
  66%{transform:translate(-20px,30px) scale(0.95)}
}

/* ===== NAVBAR ===== */
.navbar{
  position:sticky;top:0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 28px;
  background:rgba(15,15,26,0.8);
  -webkit-backdrop-filter:blur(20px) saturate(180%);
  backdrop-filter:blur(20px) saturate(180%);
  border-bottom:1px solid var(--glass-border);
}

.navbar-brand{display:flex;align-items:center;gap:12px}

.logo-icon{
  width:38px;height:38px;
  display:grid;place-items:center;
}
.logo-icon img{width:100%;height:100%;object-fit:contain;display:block}

.navbar-title{font-size:16px;font-weight:700;letter-spacing:-0.02em}
.navbar-actions{display:flex;align-items:center;gap:12px}

.status-badge{
  display:flex;align-items:center;gap:6px;
  padding:6px 12px;border-radius:999px;
  background:rgba(16,185,129,0.1);
  border:1px solid rgba(16,185,129,0.2);
  font-size:12px;color:var(--green);font-weight:500;
}

.status-dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--green);
  box-shadow:0 0 8px var(--green);
  animation:pulse 2s ease-in-out infinite;
}

@keyframes pulse{0%,100%{opacity:1}50%{opacity:0.4}}

/* ===== PAGE ===== */
.page{
  position:relative;z-index:1;
  max-width:1080px;margin:0 auto;
  padding:32px 24px 48px;
  display:flex;flex-direction:column;gap:24px;
}

/* ===== GLASS CARDS ===== */
.glass-card{
  position:relative;
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-xl);
  padding:32px 36px;
  -webkit-backdrop-filter:blur(20px) saturate(150%);
  backdrop-filter:blur(20px) saturate(150%);
  transition:transform .4s cubic-bezier(.2,.8,.2,1),box-shadow .4s cubic-bezier(.2,.8,.2,1),border-color .3s ease;
  display:flex;flex-direction:column;
  isolation:isolate;
}

/* premium glass: subtle light reflection along the top edge */
.glass-card::before{
  content:'';
  position:absolute;
  inset:0;
  border-radius:inherit;
  padding:1px;
  background:linear-gradient(180deg,rgba(255,255,255,0.18),rgba(255,255,255,0) 35%);
  -webkit-mask:linear-gradient(#000,#000) content-box,linear-gradient(#000,#000);
  mask:linear-gradient(#000,#000) content-box,linear-gradient(#000,#000);
  -webkit-mask-composite:xor;
  mask-composite:exclude;
  pointer-events:none;
  opacity:0.9;
}

.glass-card:hover{
  border-color:rgba(255,255,255,0.14);
  box-shadow:0 24px 70px -20px rgba(0,0,0,0.45),0 8px 24px -12px rgba(0,80,160,0.25);
  transform:translateY(-2px);
}

[data-theme="light"] .glass-card::before{
  background:linear-gradient(180deg,rgba(255,255,255,0.9),rgba(255,255,255,0) 40%);
  opacity:0.7;
}

/* ===== FORMS ===== */
.form{display:flex;flex-direction:column;gap:20px}

label{display:flex;flex-direction:column;gap:8px}

.label-text{
  font-size:12px;font-weight:600;
  text-transform:uppercase;letter-spacing:0.06em;
  color:var(--text-secondary);
}

input,textarea,select{
  font-family:inherit;font-size:14px;
  padding:12px 16px;
  border-radius:var(--radius);
  border:1px solid var(--glass-border);
  background:rgba(255,255,255,0.04);
  color:var(--text);outline:none;
  transition:all .2s ease;
}

input::placeholder,textarea::placeholder{color:var(--text-muted)}

input:focus,textarea:focus,select:focus{
  border-color:var(--blue);
  box-shadow:0 0 0 3px rgba(0,80,160,0.25),inset 0 0 0 1px var(--blue);
  background:rgba(0,80,160,0.04);
}

select{
  cursor:pointer;
  appearance:none;
  -webkit-appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat:no-repeat;
  background-position:right 14px center;
  padding-right:36px;
}
select:hover{
  border-color:rgba(255,255,255,0.16);
  background-color:rgba(255,255,255,0.06);
}
select option{background:#1a1f35;color:#f1f5f9;padding:8px}

[data-theme="light"] select{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%234a5568' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
}
[data-theme="light"] select:hover{
  border-color:rgba(0,0,0,0.15);
  background-color:rgba(0,0,0,0.03);
}
[data-theme="light"] select option{background:#fff;color:#1a1a2e}

textarea{resize:vertical;min-height:180px;line-height:1.7}

.row{display:grid;grid-template-columns:1fr 1fr;gap:16px}

/* ===== UPLOAD ZONE ===== */
.upload-zone{
  position:relative;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:8px;padding:40px 24px;
  min-height:min(420px, 50vh);
  border:2px dashed rgba(0,80,160,0.35);
  border-radius:var(--radius-lg);
  background:linear-gradient(135deg,rgba(0,45,107,0.06),rgba(0,80,160,0.04));
  cursor:pointer;transition:all .25s ease;
}

.upload-zone:hover,.upload-zone.drag-over{
  border-color:var(--accent);
  background:linear-gradient(135deg,rgba(227,6,19,0.08),rgba(0,80,160,0.06));
  transform:scale(1.01);
}

.upload-zone.has-file{
  border-color:var(--green);border-style:solid;
  background:rgba(16,185,129,0.06);
}

.upload-zone input[type=file]{position:absolute;inset:0;opacity:0;cursor:pointer}
.upload-icon{color:var(--accent-light);opacity:0.8}
.upload-text{font-size:14px;color:var(--text-secondary)}
.upload-link{color:var(--accent-light);font-weight:600}
.upload-hint{font-size:12px;color:var(--text-muted)}

/* ===== EDITOR ===== */
.editor-row{
  display:grid;grid-template-columns:1fr auto 1fr;
  align-items:stretch;
  border:1px solid var(--glass-border);
  border-radius:var(--radius-lg);
  overflow:hidden;background:rgba(0,0,0,0.2);
}

.editor-pane{display:flex;flex-direction:column}

.editor-pane textarea{
  flex:1;border:none;border-radius:0;
  background:transparent;padding:16px 18px;
  min-height:min(420px, 50vh);resize:none;
  line-height:1.7;font-size:14px;
  transition:background .2s ease;
}

.editor-pane textarea:focus{box-shadow:none;background:rgba(0,80,160,0.03)}
.editor-pane textarea:focus-visible{outline:none}
.editor-pane.output-pane{background:rgba(255,255,255,0.015)}
.editor-pane.output-pane textarea{color:var(--text-secondary)}
.editor-pane.output-pane textarea:not(:placeholder-shown){color:var(--text)}

.editor-divider{
  display:flex;align-items:center;justify-content:center;width:40px;
  background:rgba(255,255,255,0.02);
  border-left:1px solid var(--glass-border);
  border-right:1px solid var(--glass-border);
  color:var(--text-muted);
}

/* ===== BUTTONS ===== */
.btn{
  font-family:inherit;font-size:14px;font-weight:600;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 20px;border-radius:var(--radius);
  border:none;cursor:pointer;text-decoration:none;
  transition:all .2s ease;
}

.btn-primary{
  background:linear-gradient(135deg,var(--accent),#c20510);
  color:#fff;box-shadow:0 4px 16px var(--accent-glow);
  padding:12px 28px;
}

.btn-primary:hover{
  box-shadow:0 8px 30px var(--accent-glow);
  transform:translateY(-2px);
}
.btn-primary:active{transform:translateY(0)}

.btn-glow{position:relative;overflow:hidden}
.btn-glow::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(135deg,transparent 40%,rgba(255,255,255,0.15) 50%,transparent 60%);
  transform:translateX(-100%);transition:transform .6s ease;
}
.btn-glow:hover::after{transform:translateX(100%)}

.btn-ghost{
  background:transparent;color:var(--text-secondary);
  border:1px solid var(--glass-border);padding:10px 20px;
}
.btn-ghost:hover{background:var(--glass);color:var(--text);border-color:rgba(255,255,255,0.16);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}

.action-row{display:flex;gap:12px;align-items:center;justify-content:center;flex-wrap:wrap;padding-top:4px}
button:disabled{opacity:0.45;cursor:not-allowed;transform:none !important;box-shadow:none !important}

/* ===== SPINNER ===== */
.spinner{
  display:inline-block;width:14px;height:14px;
  border:2px solid rgba(255,255,255,0.3);
  border-top-color:#fff;border-radius:50%;
  animation:spin .6s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}

/* ===== ALERTS ===== */
.alert{padding:12px 16px;border-radius:var(--radius);font-size:13px;font-weight:500}
.error{background:rgba(239,68,68,0.1);border:1px solid rgba(239,68,68,0.2);color:#fca5a5}
.hidden{display:none !important}

/* ===== FILE PREVIEW ===== */
.file-preview{
  display:flex;align-items:center;gap:12px;
  padding:12px 16px;border-radius:var(--radius);
  background:rgba(16,185,129,0.06);
  border:1px solid rgba(16,185,129,0.2);
}
.file-preview-icon{font-size:28px;flex-shrink:0}
.file-preview-info{display:flex;flex-direction:column;gap:2px;flex:1;min-width:0}
.file-preview-name{font-size:14px;font-weight:600;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.file-preview-size{font-size:12px;color:var(--text-muted)}
.file-remove-btn{
  width:28px;height:28px;border-radius:50%;
  border:1px solid rgba(239,68,68,0.3);background:rgba(239,68,68,0.1);
  color:#fca5a5;font-size:14px;cursor:pointer;
  display:grid;place-items:center;transition:all .2s ease;
}
.file-remove-btn:hover{background:rgba(239,68,68,0.2);border-color:rgba(239,68,68,0.5)}

/* ===== PANE HEADER / FOOTER ===== */
.pane-header{
  padding:10px 16px;font-size:12px;font-weight:600;
  text-transform:uppercase;letter-spacing:0.06em;
  color:var(--text-secondary);
  border-bottom:1px solid var(--glass-border);
  background:rgba(255,255,255,0.02);
  display:flex;align-items:center;justify-content:space-between;
}
.pane-header .pane-label{display:flex;align-items:center;gap:6px}
.pane-header .pane-label svg{opacity:0.6}

.pane-lang-select{
  font-size:11px;font-weight:600;
  padding:5px 28px 5px 10px;border-radius:8px;
  border:1px solid var(--glass-border);
  background:rgba(255,255,255,0.04);
  color:var(--text-secondary);
  text-transform:none;letter-spacing:normal;
  cursor:pointer;outline:none;
  appearance:none;-webkit-appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat:no-repeat;
  background-position:right 8px center;
  transition:all .2s ease;
}
.pane-lang-select:hover{border-color:rgba(255,255,255,0.2);background-color:rgba(255,255,255,0.08)}
.pane-lang-select:focus{border-color:var(--blue)}
.pane-lang-select option{background:#1a1f35;color:#f1f5f9}

[data-theme="light"] .pane-lang-select{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 24 24' fill='none' stroke='%234a5568' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
}
[data-theme="light"] .pane-lang-select:hover{border-color:rgba(0,0,0,0.15);background-color:rgba(0,0,0,0.03)}
[data-theme="light"] .pane-lang-select option{background:#fff;color:#1a1a2e}

.pane-footer{
  padding:8px 16px;
  border-top:1px solid var(--glass-border);
  display:flex;align-items:center;justify-content:space-between;
  min-height:36px;
}
.pane-footer-left{display:flex;align-items:center;gap:8px}
.pane-footer-right{display:flex;align-items:center;gap:8px}
.char-count{
  font-size:12px;font-weight:500;color:var(--text-muted);
  padding:2px 8px;border-radius:4px;
  background:rgba(255,255,255,0.03);
}
.translation-status{
  font-size:11px;font-weight:600;color:var(--green);
  display:inline-flex;align-items:center;gap:4px;
  opacity:0;transition:opacity .3s ease;
}
.translation-status.visible{opacity:1}
.copy-btn{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;color:var(--text-secondary);
  background:rgba(255,255,255,0.04);border:1px solid var(--glass-border);
  border-radius:8px;padding:6px 12px;cursor:pointer;
  transition:all .2s ease;
}
.copy-btn:hover{color:#fff;border-color:var(--blue);background:rgba(0,80,160,0.15);transform:translateY(-1px)}
.copy-btn:active{transform:translateY(0)}

/* ===== SWAP BUTTON ===== */
.swap-btn{
  width:38px;height:38px;border-radius:50%;
  border:1px solid var(--glass-border);
  background:rgba(255,255,255,0.05);
  color:var(--text-secondary);cursor:pointer;
  display:grid;place-items:center;
  transition:all .25s ease;
  box-shadow:0 2px 8px rgba(0,0,0,0.15);
}
.swap-btn:hover{
  color:var(--accent-light);border-color:var(--accent);
  background:rgba(227,6,19,0.1);
  transform:rotate(180deg) scale(1.05);
  box-shadow:0 4px 16px rgba(227,6,19,0.2);
}
.swap-btn:active{transform:rotate(180deg) scale(0.95)}

/* ===== THEME TOGGLE ===== */
.theme-toggle{
  width:36px;height:36px;border-radius:50%;
  border:1px solid var(--glass-border);
  background:rgba(255,255,255,0.04);
  color:var(--text-secondary);cursor:pointer;
  display:grid;place-items:center;transition:all .2s ease;
}
.theme-toggle:hover{color:var(--text);background:rgba(255,255,255,0.08);border-color:rgba(255,255,255,0.2)}
.icon-moon{display:none}
[data-theme="light"] .icon-sun{display:none}
[data-theme="light"] .icon-moon{display:block}

/* ===== TOAST ===== */
.toast-container{
  position:fixed;bottom:24px;right:24px;z-index:9999;
  display:flex;flex-direction:column;gap:8px;
}
.toast{
  padding:12px 20px;border-radius:var(--radius);
  font-size:13px;font-weight:500;
  transform:translateX(120%);opacity:0;
  transition:all .3s ease;
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
}
.toast-visible{transform:translateX(0);opacity:1}
.toast-success{background:rgba(16,185,129,0.15);border:1px solid rgba(16,185,129,0.3);color:#6ee7b7}
.toast-error{background:rgba(239,68,68,0.15);border:1px solid rgba(239,68,68,0.3);color:#fca5a5}

/* ===== FOOTER ===== */
.footer{text-align:center;padding:16px;font-size:12px;color:var(--text-muted)}

/* ===== LIGHT THEME ===== */
[data-theme="light"]{
  --bg: #f5f7fa;
  --glass: rgba(255,255,255,0.7);
  --glass-border: rgba(0,0,0,0.08);
  --text: #1a1a2e;
  --text-secondary: #4a5568;
  --text-muted: #718096;
  --accent: #e30613;
  --accent-light: #ff2d3b;
  --accent-glow: rgba(227,6,19,0.2);
  --navy: #002d6b;
  --blue: #0050a0;
}
[data-theme="light"] body{
  background:#f5f7fa;
  background-image:linear-gradient(180deg,#f5f7fa 0%,#e8edf5 100%);
}
[data-theme="light"] .navbar{background:rgba(255,255,255,0.85)}
[data-theme="light"] .blob{opacity:0.15}
[data-theme="light"] .glass-card{background:rgba(255,255,255,0.7);box-shadow:0 4px 24px rgba(0,0,0,0.06)}
[data-theme="light"] .glass-card:hover{box-shadow:0 12px 40px rgba(0,0,0,0.1)}
[data-theme="light"] input,[data-theme="light"] textarea,[data-theme="light"] select{background-color:rgba(0,0,0,0.02);border-color:rgba(0,0,0,0.1);color:#1a1a2e}
[data-theme="light"] .pane-lang-select{background-color:rgba(0,0,0,0.03);color:#4a5568}
[data-theme="light"] .pane-lang-select option{background:#fff;color:#1a1a2e}
[data-theme="light"] select option{background:#fff;color:#1a1a2e}
[data-theme="light"] .editor-row{background:rgba(0,0,0,0.02)}
[data-theme="light"] .toast-success{background:rgba(16,185,129,0.1);color:#047857}
[data-theme="light"] .toast-error{background:rgba(239,68,68,0.1);color:#dc2626}
[data-theme="light"] .status-badge{background:rgba(16,185,129,0.08);color:#047857}
[data-theme="light"] .error{background:rgba(239,68,68,0.08);color:#dc2626}

/* ===== TABS ===== */
.tabs{
  display:flex;gap:4px;
  padding:4px;margin-bottom:24px;
  background:rgba(0,0,0,0.2);
  border-radius:var(--radius);
  border:1px solid var(--glass-border);
}
.tab{
  flex:1;display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 20px;border-radius:calc(var(--radius) - 2px);
  font-family:inherit;font-size:14px;font-weight:600;
  color:var(--text-secondary);background:transparent;
  border:none;cursor:pointer;transition:all .25s ease;
  position:relative;overflow:hidden;
}
.tab:hover{color:var(--text);background:rgba(255,255,255,0.05)}
.tab.active{
  color:var(--text);
  background:rgba(255,255,255,0.1);
  box-shadow:0 2px 8px rgba(0,0,0,0.2),inset 0 -2px 0 var(--accent);
}
.tab.active::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(135deg,transparent 30%,rgba(255,255,255,0.08) 50%,transparent 70%);
  transform:translateX(-100%);
  animation:tabShine 2.4s ease-in-out 1;
  pointer-events:none;
}
@keyframes tabShine{
  0%{transform:translateX(-100%)}
  60%,100%{transform:translateX(100%)}
}
.tab.active svg{color:var(--accent-light)}
[data-theme="light"] .tabs{background:rgba(0,0,0,0.04)}
[data-theme="light"] .tab:hover{background:rgba(0,0,0,0.04)}
[data-theme="light"] .tab.active{background:rgba(255,255,255,0.85);box-shadow:0 2px 8px rgba(0,0,0,0.08),inset 0 -2px 0 var(--accent)}

.tab-panel{display:none}
.tab-panel.active{display:block;animation:fadeUp .3s ease both}

/* ===== ANIMATIONS ===== */
.fade-in{animation:fadeUp .6s ease both}

@keyframes fadeUp{
  from{opacity:0;transform:translateY(20px)}
  to{opacity:1;transform:translateY(0)}
}

/* ===== RESPONSIVE ===== */
@media(max-width:900px){
  .page{padding:24px 16px 40px}
  .glass-card{padding:20px;border-radius:var(--radius-lg)}
  .row{grid-template-columns:1fr}
  .editor-row{grid-template-columns:1fr;grid-template-rows:1fr auto 1fr}
  .editor-divider{width:100%;height:40px;border-left:none;border-right:none;border-top:1px solid var(--glass-border);border-bottom:1px solid var(--glass-border)}
  .editor-divider svg{transform:rotate(90deg)}
  .navbar{padding:12px 16px}
  .tab{padding:10px 12px;font-size:13px}
}