.signin-container{min-height:calc(100vh - 200px);display:flex;align-items:center;justify-content:center;padding:4rem 1rem;background:var(--bg-primary)}.signin-card{background:var(--bg-primary);border-radius:18px;border:1px solid var(--border-light);max-width:420px;width:100%;padding:3rem 2.5rem}.signin-header{text-align:center;margin-bottom:2.5rem}.signin-header h1{font-size:2.25rem;margin-bottom:.75rem;color:var(--text-primary);font-weight:600;letter-spacing:-.02em}.signin-header p{color:var(--text-secondary);font-size:1.0625rem;font-weight:400}.error-message{background:var(--color-error-bg);border:1px solid rgba(255,59,48,.3);color:var(--color-error);padding:1rem 1.25rem;border-radius:12px;margin-bottom:1.5rem;font-size:.9375rem;font-weight:500}[data-theme=dark] .error-message{background:rgba(255,69,58,.15);border-color:rgba(255,69,58,.4);color:#ff453a}.signin-form{gap:1.5rem}.form-group,.signin-form{display:flex;flex-direction:column}.form-group{gap:.625rem}.form-group label{font-weight:500;color:var(--text-primary);font-size:.9375rem;letter-spacing:-.01em}.form-group input{padding:.875rem 1.125rem;border:1px solid var(--border-light);border-radius:12px;font-size:1.0625rem;background:var(--bg-secondary);color:var(--text-primary);transition:var(--transition-fast)}.form-group input:focus{outline:none;border-color:var(--accent);background:var(--bg-primary)}.form-group input:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--accent);color:white;border:none;padding:.9375rem 1.5rem;border-radius:12px;font-size:1.0625rem;font-weight:500;cursor:pointer;transition:var(--transition-fast);margin-top:.5rem;letter-spacing:-.01em}.btn-primary:hover:not(:disabled){background:var(--accent-dark);transform:scale(.98)}.btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none}.divider{display:flex;align-items:center;margin:2rem 0;color:var(--text-secondary);font-size:.875rem;font-weight:500}.divider:after,.divider:before{content:"";flex:1 1;height:1px;background:var(--border-light)}.divider span{padding:0 1.25rem}.social-buttons{display:flex;flex-direction:column;gap:.875rem}.btn-social{display:flex;align-items:center;justify-content:center;gap:.875rem;padding:.875rem 1.5rem;border:1px solid var(--border-light);border-radius:12px;background:var(--bg-secondary);color:var(--text-primary);font-size:1rem;font-weight:500;cursor:pointer;transition:var(--transition-fast);letter-spacing:-.01em}.btn-social:hover:not(:disabled){border-color:var(--border);background:var(--bg-tertiary);transform:scale(.98)}.btn-social:disabled{opacity:.5;cursor:not-allowed;transform:none}.btn-social.google{color:var(--text-primary)}.btn-social.facebook{background:#1877f2;color:white;border-color:#1877f2}.btn-social.facebook:hover:not(:disabled){background:#166fe5;border-color:#166fe5}.signin-footer{margin-top:2.5rem;text-align:center;display:flex;flex-direction:column;gap:1rem}.signin-footer p{color:var(--text-secondary);font-size:.9375rem}.signin-footer a{color:var(--accent);text-decoration:none;font-weight:500;transition:var(--transition-fast)}.signin-footer a:hover{opacity:.8}.forgot-link{font-size:.875rem!important;color:var(--accent)!important}@media (max-width:640px){.signin-container{padding:2rem 1rem}.signin-card{padding:2rem 1.5rem}.signin-header h1{font-size:2rem}.btn-primary,.btn-social{padding:.875rem 1.125rem;font-size:1rem}}