/* String Obfuscator — Minimal Dark Theme */
:root {
  --primary:#10b981;--primary-light:#34d399;--primary-dark:#059669;
  --accent:#6366f1;--accent-light:#818cf8;
  --bg-base:#0a0f0d;--bg-surface:#111a16;--bg-elevated:#1a2720;
  --bg-glass:rgba(17,26,22,0.7);--bg-glass-border:rgba(16,185,129,0.12);
  --text-primary:#e6f5ee;--text-secondary:#8fb5a2;--text-muted:#5a7d6e;
  --border:rgba(16,185,129,0.15);--border-strong:rgba(16,185,129,0.3);
  --radius:12px;--radius-sm:8px;--radius-xs:6px;
  --shadow:0 4px 24px rgba(0,0,0,0.3);
  --font-sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --font-mono:'JetBrains Mono','Fira Code','Consolas',monospace;
  --transition:250ms ease;
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{font-size:16px;scroll-behavior:smooth;-webkit-font-smoothing:antialiased}
body{font-family:var(--font-sans);background:var(--bg-base);color:var(--text-primary);line-height:1.6;min-height:100vh;display:flex;flex-direction:column;background-image:radial-gradient(ellipse at 20% 0%,rgba(16,185,129,.06) 0%,transparent 50%),radial-gradient(ellipse at 80% 100%,rgba(99,102,241,.04) 0%,transparent 50%)}
.glass-card{background:var(--bg-glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--bg-glass-border);border-radius:var(--radius);padding:1.5rem;box-shadow:var(--shadow);transition:border-color var(--transition)}
.glass-card:hover{border-color:var(--border-strong)}
.app-header{position:sticky;top:0;z-index:100;background:rgba(10,15,13,.88);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);padding:.75rem 1.5rem}
.header-content{max-width:900px;margin:0 auto;display:flex;align-items:center}
.logo-group{display:flex;align-items:center;gap:.75rem}
.logo-icon{width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:rgba(16,185,129,.1);border-radius:var(--radius-sm);border:1px solid rgba(16,185,129,.2)}
.app-header h1{font-size:1.15rem;font-weight:700;background:linear-gradient(135deg,var(--primary-light),var(--primary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.subtitle{font-size:.75rem;color:var(--text-muted)}
.container{max-width:900px;margin:0 auto;padding:2rem 1.5rem;width:100%;flex:1;display:flex;flex-direction:column;gap:1rem}
.btn{display:inline-flex;align-items:center;gap:.4rem;padding:.55rem 1rem;font-family:var(--font-sans);font-size:.85rem;font-weight:500;border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition);background:var(--bg-elevated);color:var(--text-primary)}
.btn:hover{border-color:var(--primary);background:rgba(16,185,129,.1)}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-dark));border-color:var(--primary);color:#fff;box-shadow:0 2px 10px rgba(16,185,129,.3)}
.btn-primary:hover{box-shadow:0 4px 16px rgba(16,185,129,.4);transform:translateY(-1px)}
.btn-accent{background:linear-gradient(135deg,var(--accent),#4f46e5);border-color:var(--accent);color:#fff;box-shadow:0 2px 10px rgba(99,102,241,.3)}
.btn-accent:hover{box-shadow:0 4px 16px rgba(99,102,241,.4);transform:translateY(-1px)}
.btn-sm{padding:.35rem .7rem;font-size:.8rem}
.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:.75rem}
.section-title{display:flex;align-items:center;gap:.5rem;font-size:1rem;font-weight:600;color:var(--primary-light);margin-bottom:.75rem}
.section-header .section-title{margin-bottom:0}
.code-textarea{width:100%;padding:1rem;font-family:var(--font-mono);font-size:.82rem;line-height:1.7;color:var(--text-primary);background:var(--bg-base);border:1px solid var(--border);border-radius:var(--radius-sm);resize:vertical;transition:border-color var(--transition)}
.code-textarea::placeholder{color:var(--text-muted)}
.code-textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(16,185,129,.15)}
.code-textarea[readonly]{color:var(--text-secondary);cursor:default}
.controls-bar{display:flex;align-items:center;gap:1rem;flex-wrap:wrap;padding:1rem 1.5rem}
.method-group{display:flex;align-items:center;gap:.5rem}
.control-label{font-size:.8rem;font-weight:500;color:var(--text-secondary)}
.select-input{padding:.45rem .75rem;font-family:var(--font-sans);font-size:.82rem;background:var(--bg-base);border:1px solid var(--border);border-radius:var(--radius-xs);color:var(--text-primary);cursor:pointer;transition:border-color var(--transition)}
.select-input:focus{outline:none;border-color:var(--primary)}
.action-group{display:flex;gap:.5rem;flex-wrap:wrap;margin-left:auto}
.toast{position:fixed;bottom:1.5rem;right:1.5rem;background:var(--bg-elevated);border:1px solid var(--primary);color:var(--primary-light);padding:.5rem 1rem;border-radius:var(--radius-sm);font-size:.8rem;z-index:200;transform:translateY(80px);opacity:0;transition:all .3s;pointer-events:none}
.toast.show{transform:translateY(0);opacity:1}
.app-footer{text-align:center;padding:1.5rem;font-size:.75rem;color:var(--text-muted);border-top:1px solid var(--border)}
@media(max-width:768px){.container{padding:1rem}.glass-card{padding:1rem}.controls-bar{flex-direction:column;align-items:stretch;gap:.5rem}.action-group{margin-left:0;justify-content:center}.method-group{justify-content:center}}
@media(max-width:480px){.app-header h1{font-size:1rem}.logo-icon{display:none}}