/* ===== RESET ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;-webkit-text-size-adjust:100%;height:100%}
body{font-family:-apple-system,BlinkMacSystemFont,'SF Pro Display','Segoe UI',Roboto,sans-serif;line-height:1.5;overflow:hidden;height:100%;height:100vh;height:-webkit-fill-available;color:var(--text-primary);background:var(--bg-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
button,input{font:inherit;border:none;outline:none;background:none;color:inherit}
a{color:inherit;text-decoration:none}

/* ===== THEMES — ULTRA DARK OLED ===== */
:root,[data-theme="dark"]{
  --bg-primary:#000000;--bg-secondary:#0a0a0a;--bg-tertiary:#111111;--bg-elevated:#161616;
  --bg-card:#0d0d0d;--bg-input:#0e0e0e;
  --text-primary:#f5f5f5;--text-secondary:#888888;--text-muted:#555555;
  --accent:#a78bfa;--accent-hover:#c4b5fd;--accent-dim:rgba(167,139,250,0.15);--accent-glow:rgba(167,139,250,0.06);
  --border:#1a1a1a;--border-focus:#2a2a2a;
  --success:#34d399;--error:#f87171;
  --radius:14px;--radius-sm:10px;--radius-lg:20px;--radius-xl:24px;
  --shadow:0 8px 32px rgba(0,0,0,0.6);
  --transition:0.25s cubic-bezier(0.4,0,0.2,1);
  --transition-spring:0.4s cubic-bezier(0.34,1.56,0.64,1);
}
[data-theme="ocean"]{
  --bg-primary:#020810;--bg-secondary:#060e1a;--bg-tertiary:#0a1628;--bg-elevated:#0e1e36;
  --bg-card:#070f1c;--bg-input:#081220;
  --text-primary:#e0f0ff;--text-secondary:#5a8ab5;--text-muted:#3a6080;
  --accent:#38bdf8;--accent-hover:#7dd3fc;--accent-dim:rgba(56,189,248,0.15);--accent-glow:rgba(56,189,248,0.06);
  --border:#0e1e36;--border-focus:#1a3050;
}
[data-theme="rose"]{
  --bg-primary:#0a0005;--bg-secondary:#120008;--bg-tertiary:#1a0010;--bg-elevated:#220018;
  --bg-card:#0e0006;--bg-input:#100008;
  --text-primary:#fce4ec;--text-secondary:#a07080;--text-muted:#704050;
  --accent:#f472b6;--accent-hover:#f9a8d4;--accent-dim:rgba(244,114,182,0.15);--accent-glow:rgba(244,114,182,0.06);
  --border:#1a0010;--border-focus:#2a0018;
}
[data-theme="forest"]{
  --bg-primary:#020a02;--bg-secondary:#061206;--bg-tertiary:#0a1a0a;--bg-elevated:#0e220e;
  --bg-card:#050e05;--bg-input:#061006;
  --text-primary:#d4f0d4;--text-secondary:#6a9060;--text-muted:#406040;
  --accent:#4ade80;--accent-hover:#86efac;--accent-dim:rgba(74,222,128,0.15);--accent-glow:rgba(74,222,128,0.06);
  --border:#0a1a0a;--border-focus:#122a12;
}
[data-theme="nord"]{
  --bg-primary:#0d1117;--bg-secondary:#111820;--bg-tertiary:#161e28;--bg-elevated:#1c2632;
  --bg-card:#0f1419;--bg-input:#10161c;
  --text-primary:#eceff4;--text-secondary:#7a8ea0;--text-muted:#4a5e70;
  --accent:#88c0d0;--accent-hover:#8fbcbb;--accent-dim:rgba(136,192,208,0.15);--accent-glow:rgba(136,192,208,0.06);
  --border:#1c2632;--border-focus:#2a3848;
}
[data-theme="light"]{
  --bg-primary:#fafafa;--bg-secondary:#f0f0f0;--bg-tertiary:#e8e8e8;--bg-elevated:#ffffff;
  --bg-card:#ffffff;--bg-input:#f5f5f5;
  --text-primary:#111111;--text-secondary:#666666;--text-muted:#aaaaaa;
  --accent:#7c3aed;--accent-hover:#6d28d9;--accent-dim:rgba(124,58,237,0.1);--accent-glow:rgba(124,58,237,0.04);
  --border:#e5e5e5;--border-focus:#d0d0d0;
  --shadow:0 8px 32px rgba(0,0,0,0.08);
}

/* ===== LANDING LAYOUT ===== */
.landing{
  position:relative;height:100%;height:100vh;height:-webkit-fill-available;
  display:flex;align-items:center;justify-content:center;
  background:var(--bg-primary);overflow:hidden;
}

/* Background orbs */
.landing-bg{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.bg-orb{
  position:absolute;border-radius:50%;filter:blur(80px);opacity:0.35;
  animation:orbFloat 20s ease-in-out infinite;
}
.bg-orb-1{
  width:300px;height:300px;
  background:var(--accent);
  top:-80px;right:-60px;
  opacity:0.12;
}
.bg-orb-2{
  width:200px;height:200px;
  background:var(--accent);
  bottom:-40px;left:-40px;
  opacity:0.08;
  animation-delay:-10s;
  animation-direction:reverse;
}
@keyframes orbFloat{
  0%,100%{transform:translate(0,0) scale(1)}
  25%{transform:translate(20px,-15px) scale(1.05)}
  50%{transform:translate(-10px,20px) scale(0.95)}
  75%{transform:translate(-20px,-10px) scale(1.02)}
}

/* Content wrapper */
.landing-content{
  position:relative;z-index:1;width:100%;max-width:340px;
  padding:24px 20px;
  display:flex;flex-direction:column;align-items:center;
  gap:28px;
}

/* ===== BRAND MARK ===== */
.brand-mark{
  text-align:center;
  opacity:0;transform:translateY(20px);
  animation:slideUp 0.8s cubic-bezier(0.34,1.56,0.64,1) 0.2s forwards;
}
.brand-icon{
  font-size:2.8rem;margin-bottom:12px;
  animation:iconPulse 3s ease-in-out infinite;
}
@keyframes iconPulse{
  0%,100%{transform:scale(1)}
  50%{transform:scale(1.06)}
}
.brand-name{
  font-size:1.7rem;font-weight:800;letter-spacing:-1px;
  background:linear-gradient(135deg,var(--text-primary),var(--accent));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;
}
.brand-tagline{
  font-size:0.82rem;color:var(--text-muted);margin-top:4px;letter-spacing:0.5px;
}

/* ===== AUTH CARD ===== */
.auth-card{
  width:100%;
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius-xl);
  padding:28px 24px;
  box-shadow:var(--shadow);
  opacity:0;transform:translateY(24px);
  animation:slideUp 0.8s cubic-bezier(0.34,1.56,0.64,1) 0.4s forwards;
}
@keyframes slideUp{
  to{opacity:1;transform:translateY(0)}
}

.auth-view{animation-duration:0.35s}
.auth-view.fade-in{animation:fadeSwitch 0.35s ease}
@keyframes fadeSwitch{
  from{opacity:0;transform:translateY(8px)}
  to{opacity:1;transform:translateY(0)}
}

.auth-card h2{
  font-size:1.2rem;font-weight:700;margin-bottom:2px;letter-spacing:-0.3px;
}
.auth-sub{
  font-size:0.8rem;color:var(--text-muted);margin-bottom:18px;
}

/* Input group */
.input-group{display:flex;flex-direction:column;gap:14px;margin-bottom:20px}
.input-wrap{position:relative}
.auth-input{
  width:100%;padding:14px 16px 6px;
  background:var(--bg-input);
  border:1.5px solid var(--border);
  border-radius:var(--radius-sm);
  color:var(--text-primary);
  font-size:0.95rem;
  transition:border-color var(--transition),box-shadow var(--transition);
  -webkit-appearance:none;
}
.auth-input:focus{
  border-color:var(--accent);
  box-shadow:0 0 0 3px var(--accent-dim);
}
.input-label{
  position:absolute;left:16px;top:50%;
  transform:translateY(-50%);
  font-size:0.85rem;color:var(--text-muted);
  pointer-events:none;
  transition:all 0.2s ease;
}
.auth-input:focus ~ .input-label,
.auth-input:not(:placeholder-shown) ~ .input-label{
  top:10px;transform:none;
  font-size:0.65rem;color:var(--accent);
  letter-spacing:0.3px;text-transform:uppercase;font-weight:600;
}
.input-line{
  position:absolute;bottom:0;left:50%;width:0;height:2px;
  background:var(--accent);border-radius:1px;
  transition:all 0.3s cubic-bezier(0.4,0,0.2,1);
  transform:translateX(-50%);
}
.auth-input:focus ~ .input-line{width:100%}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--radius-sm);
  font-weight:600;font-size:0.9rem;
  cursor:pointer;transition:all var(--transition);
  border:1px solid transparent;white-space:nowrap;
  -webkit-tap-highlight-color:transparent;
  position:relative;overflow:hidden;
}
.btn::after{
  content:'';position:absolute;inset:0;
  background:radial-gradient(circle at var(--x,50%) var(--y,50%),rgba(255,255,255,0.15),transparent 60%);
  opacity:0;transition:opacity 0.3s;
}
.btn:active::after{opacity:1}
.btn-primary{
  background:var(--accent);color:#000;
  box-shadow:0 2px 12px var(--accent-dim);
}
.btn-primary:hover{
  background:var(--accent-hover);
  transform:translateY(-1px);
  box-shadow:0 4px 20px var(--accent-dim);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 1px 6px var(--accent-dim)}
.btn-full{width:100%}
.btn svg{transition:transform var(--transition)}
.btn:hover svg{transform:translateX(3px)}

/* Error */
.error{
  background:rgba(248,113,113,0.08);color:var(--error);
  border-radius:var(--radius-sm);padding:10px 14px;
  font-size:0.78rem;margin-bottom:12px;
  display:none;border:1px solid rgba(248,113,113,0.15);
}
.error.show{display:block;animation:shake 0.4s ease}
@keyframes shake{
  0%,100%{transform:translateX(0)}
  20%{transform:translateX(-6px)}
  40%{transform:translateX(6px)}
  60%{transform:translateX(-4px)}
  80%{transform:translateX(4px)}
}

/* Switch link */
.auth-switch{
  text-align:center;margin-top:16px;
  font-size:0.78rem;color:var(--text-muted);
}
.auth-switch a{
  color:var(--accent);font-weight:600;
  cursor:pointer;transition:color var(--transition);
}
.auth-switch a:hover{color:var(--accent-hover)}
.auth-switch a:active{opacity:0.7}

/* ===== FOOTER / THEME PILL ===== */
.landing-footer{
  opacity:0;animation:slideUp 0.8s cubic-bezier(0.34,1.56,0.64,1) 0.6s forwards;
}
.theme-pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:20px;
  background:var(--bg-tertiary);
  border:1px solid var(--border);
  font-size:0.72rem;color:var(--text-muted);
  cursor:pointer;transition:all var(--transition);
  -webkit-tap-highlight-color:transparent;
  text-transform:uppercase;letter-spacing:0.5px;font-weight:600;
}
.theme-pill:hover{border-color:var(--border-focus);color:var(--text-secondary)}
.theme-pill:active{transform:scale(0.96)}
.theme-dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 8px var(--accent-dim);
}

/* ===== RESPONSIVE — iPhone 6 OPTIMIZED ===== */
@media(max-width:380px){
  .landing-content{padding:20px 16px;gap:24px}
  .brand-icon{font-size:2.4rem}
  .brand-name{font-size:1.5rem}
  .auth-card{padding:24px 20px;border-radius:var(--radius-lg)}
  .auth-card h2{font-size:1.1rem}
  .auth-input{padding:13px 14px 5px;font-size:0.9rem}
  .btn{padding:12px 20px;font-size:0.85rem}
}

/* Very short screens */
@media(max-height:600px){
  .landing-content{gap:16px}
  .brand-icon{font-size:2rem;margin-bottom:8px}
  .brand-tagline{display:none}
  .auth-card{padding:20px 18px}
  .input-group{gap:10px;margin-bottom:16px}
  .bg-orb{display:none}
}

/* Safe area for notched iPhones */
@supports(padding:env(safe-area-inset-bottom)){
  .landing-content{
    padding-bottom:calc(24px + env(safe-area-inset-bottom));
  }
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar{width:0;height:0}